From 61949ee565e83e29a2c7d6b09b0dcadc7b4ac02a Mon Sep 17 00:00:00 2001
From: Michael Milton <michael.r.milton@gmail.com>
Date: Wed, 26 Jun 2024 17:09:33 +1000
Subject: [PATCH] Update

---
 06-containers-on-the-cloud.html            |  2 +-
 08-orchestration.html                      |  2 +-
 404.html                                   |  4 +--
 CODE_OF_CONDUCT.html                       |  2 +-
 LICENSE.html                               |  2 +-
 about.html                                 |  2 +-
 advanced-containers.html                   | 10 +++---
 aio.html                                   | 40 +++++++++++-----------
 creating-container-images.html             |  8 ++---
 discuss.html                               |  2 +-
 docker-hub.html                            |  4 +--
 docker-image-examples.html                 |  2 +-
 e01-github-actions.html                    |  2 +-
 e02-jekyll-lesson-example.html             |  2 +-
 images.html                                |  4 +--
 index.html                                 | 28 +++++++++++++--
 instructor/06-containers-on-the-cloud.html |  2 +-
 instructor/08-orchestration.html           |  2 +-
 instructor/404.html                        |  4 +--
 instructor/CODE_OF_CONDUCT.html            |  2 +-
 instructor/LICENSE.html                    |  2 +-
 instructor/about.html                      |  2 +-
 instructor/advanced-containers.html        | 10 +++---
 instructor/aio.html                        | 40 +++++++++++-----------
 instructor/creating-container-images.html  |  8 ++---
 instructor/discuss.html                    |  2 +-
 instructor/docker-hub.html                 |  4 +--
 instructor/docker-image-examples.html      |  2 +-
 instructor/e01-github-actions.html         |  2 +-
 instructor/e02-jekyll-lesson-example.html  |  2 +-
 instructor/images.html                     |  4 +--
 instructor/index.html                      | 28 +++++++++++++--
 instructor/introduction.html               | 14 ++++----
 instructor/key-points.html                 |  4 +--
 instructor/managing-containers.html        |  2 +-
 instructor/meet-docker.html                |  2 +-
 instructor/profiles.html                   |  4 +--
 instructor/reference.html                  |  2 +-
 instructor/reproduciblity.html             |  4 +--
 instructor/running-containers.html         | 10 +++---
 introduction.html                          | 14 ++++----
 key-points.html                            |  4 +--
 managing-containers.html                   |  2 +-
 md5sum.txt                                 |  6 ++--
 meet-docker.html                           |  2 +-
 pkgdown.yml                                |  2 +-
 profiles.html                              |  4 +--
 reference.html                             |  2 +-
 reproduciblity.html                        |  4 +--
 running-containers.html                    | 10 +++---
 50 files changed, 186 insertions(+), 138 deletions(-)

diff --git a/06-containers-on-the-cloud.html b/06-containers-on-the-cloud.html
index 73f9319e..5f77f89c 100644
--- a/06-containers-on-the-cloud.html
+++ b/06-containers-on-the-cloud.html
@@ -494,7 +494,7 @@ <h3 id="edit-your-repositorys-bitbucket-pipelines-yml-file-through-the-web">Edit
   "identifier": "https://preview.carpentries.org/docker-introduction/06-containers-on-the-cloud.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/08-orchestration.html b/08-orchestration.html
index 3adb89a7..e8084fe7 100644
--- a/08-orchestration.html
+++ b/08-orchestration.html
@@ -425,7 +425,7 @@ <h3 class="callout-title">The Wild West<a class="anchor" aria-label="anchor" hre
   "identifier": "https://preview.carpentries.org/docker-introduction/08-orchestration.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/404.html b/404.html
index 6fcabfe1..9075f784 100644
--- a/404.html
+++ b/404.html
@@ -339,8 +339,8 @@ <h1>Page not found</h1>
   "url": "https://preview.carpentries.org/docker-introduction/404.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/404.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 7f29c5e2..47027b13 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -375,7 +375,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/CODE_OF_CONDUCT.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/LICENSE.html b/LICENSE.html
index da5753ac..7bb0ad9c 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -426,7 +426,7 @@ <h1>Licenses</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/LICENSE.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/about.html b/about.html
index ee33cdb7..e1275156 100644
--- a/about.html
+++ b/about.html
@@ -368,7 +368,7 @@ <h1>About</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/about.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/advanced-containers.html b/advanced-containers.html
index 8ed7d947..b1955772 100644
--- a/advanced-containers.html
+++ b/advanced-containers.html
@@ -517,7 +517,7 @@ <h3 class="callout-title">Exercise: Explore the script<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>This script comes from <a href="https://wiki.python.org/moin/SimplePrograms" class="external-link">the Python Wiki</a>
 and is set to add all numbers that are passed to it as arguments.</p>
@@ -544,7 +544,7 @@ <h3 class="callout-title">Exercise: Checking the options<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here’s a breakdown of each piece of the command above</p>
 <ul><li>
@@ -586,7 +586,7 @@ <h3 class="callout-title">Exercise: Interactive jobs<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The docker command to run the container interactively is:</p>
 <div class="codewrapper sourceCode" id="cb8">
@@ -689,7 +689,7 @@ <h3 class="callout-title">Exercise: Did it work?<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>You can start the container interactively like so:</p>
 <div class="codewrapper sourceCode" id="cb14">
@@ -972,7 +972,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/advanced-containers.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/aio.html b/aio.html
index e15d8fd5..f01cb7b3 100644
--- a/aio.html
+++ b/aio.html
@@ -356,7 +356,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-introduction"><p>Content from <a href="introduction.html">Introducing Containers</a></p>
 <hr>
-<p>Last updated on 2024-06-19 |
+<p>Last updated on 2024-06-26 |
         
         <a href="https://github.com/fishtree-attempt/docker-introduction/edit/main/episodes/introduction.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -495,10 +495,10 @@ <h3 class="callout-title">Software and Science<a class="anchor" aria-label="anch
 </section><section id="what-is-a-container-what-is-docker"><h2 class="section-heading">What is a Container? What is Docker?<a class="anchor" aria-label="anchor" href="#what-is-a-container-what-is-docker"></a>
 </h2>
 <hr class="half-width">
-<p>[Docker][Docker] is a tool that allows you to build what are called
-“containers.” It’s not the only tool that can create containers, but is
-the one we’ve chosen for this workshop. But what <em>is</em> a
-container?</p>
+<p><a href="https://www.docker.com/" class="external-link">Docker</a> is a tool that allows
+you to build what are called “containers.” It’s not the only tool that
+can create containers, but is the one we’ve chosen for this workshop.
+But what <em>is</em> a container?</p>
 <p>To understand containers, let’s first talk briefly about your
 computer.</p>
 <p>Your computer has some standard pieces that allow it to work – often
@@ -1208,7 +1208,7 @@ <h3 class="callout-title">Exercise: Check on Your Images<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>To see if the <code>hello-world</code> container image is now on your
 computer, run:</p>
@@ -1369,7 +1369,7 @@ <h3 class="callout-title">Hello World, Part 2<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Use the same command as above, but with the <code>echo</code> command
 to print a message.</p>
@@ -1464,7 +1464,7 @@ <h3 class="callout-title">Practice Makes Perfect<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution 1 – Interactive</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Run an interactive ubuntu container – you can use
 <code>docker image pull</code> first, or just run it with this
@@ -1502,7 +1502,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution 2 – Run commands</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>Run a ubuntu container, first with a command to read out the Linux
 version:</p>
@@ -1996,7 +1996,7 @@ <h3 class="callout-title">What’s in a name?<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First, search for <code>rocker</code> in Docker Hub. Then look for
 their <code>tidyverse</code> container image. You can look at the list
@@ -2192,7 +2192,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -2298,7 +2298,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -2400,7 +2400,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p>To see your new image, run <code>docker image ls</code>. You
@@ -2781,7 +2781,7 @@ <h3 class="callout-title">Exercise: Explore the script<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>This script comes from <a href="https://wiki.python.org/moin/SimplePrograms" class="external-link">the Python Wiki</a>
 and is set to add all numbers that are passed to it as arguments.</p>
@@ -2808,7 +2808,7 @@ <h3 class="callout-title">Exercise: Checking the options<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here’s a breakdown of each piece of the command above</p>
 <ul>
@@ -2852,7 +2852,7 @@ <h3 class="callout-title">Exercise: Interactive jobs<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The docker command to run the container interactively is:</p>
 <div class="codewrapper sourceCode" id="cb8">
@@ -2956,7 +2956,7 @@ <h3 class="callout-title">Exercise: Did it work?<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>You can start the container interactively like so:</p>
 <div class="codewrapper sourceCode" id="cb14">
@@ -3497,7 +3497,7 @@ <h3 class="callout-title">Positives and negatives<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>This is not an exhaustive list but some of the advantages and
 disadvantages could be:</p>
@@ -3648,8 +3648,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://preview.carpentries.org/docker-introduction/aio.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/aio.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/creating-container-images.html b/creating-container-images.html
index 1f65924e..d30ad34e 100644
--- a/creating-container-images.html
+++ b/creating-container-images.html
@@ -415,7 +415,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -518,7 +518,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -615,7 +615,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>To see your new image, run <code>docker image ls</code>. You
 should see the name of your new container image under the “REPOSITORY”
@@ -834,7 +834,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/creating-container-images.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/discuss.html b/discuss.html
index 74210a9d..cee36d24 100644
--- a/discuss.html
+++ b/discuss.html
@@ -368,7 +368,7 @@ <h1>Discussion</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/discuss.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/docker-hub.html b/docker-hub.html
index 7e61ba5d..95fe4e03 100644
--- a/docker-hub.html
+++ b/docker-hub.html
@@ -474,7 +474,7 @@ <h3 class="callout-title">What’s in a name?<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First, search for <code>rocker</code> in Docker Hub. Then look for
 their <code>tidyverse</code> container image. You can look at the list
@@ -617,7 +617,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/docker-hub.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/docker-image-examples.html b/docker-image-examples.html
index ca656778..3c7fe9e8 100644
--- a/docker-image-examples.html
+++ b/docker-image-examples.html
@@ -473,7 +473,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/docker-image-examples.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/e01-github-actions.html b/e01-github-actions.html
index 4d647bf0..ebcc673b 100644
--- a/e01-github-actions.html
+++ b/e01-github-actions.html
@@ -601,7 +601,7 @@ <h1 id="reference-material">Reference material<a class="anchor" aria-label="anch
   "identifier": "https://preview.carpentries.org/docker-introduction/e01-github-actions.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/e02-jekyll-lesson-example.html b/e02-jekyll-lesson-example.html
index f023ab44..a5a102ab 100644
--- a/e02-jekyll-lesson-example.html
+++ b/e02-jekyll-lesson-example.html
@@ -512,7 +512,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   "identifier": "https://preview.carpentries.org/docker-introduction/e02-jekyll-lesson-example.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/images.html b/images.html
index e9a0e7d4..fc87241a 100644
--- a/images.html
+++ b/images.html
@@ -411,8 +411,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://preview.carpentries.org/docker-introduction/images.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/images.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index 24bee9a3..6d6b0c90 100644
--- a/index.html
+++ b/index.html
@@ -296,6 +296,30 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 goal of using them to effect reproducible computational environments.
 Such environments are useful for ensuring reproducible research outputs,
 for example.</p>
+<div id="after-completing-this-session-you-should" class="callout">
+<div class="callout-square">
+<i class="callout-icon" data-feather="bell"></i>
+</div>
+<div id="after-completing-this-session-you-should" class="callout-inner">
+<h3 class="callout-title">After completing this session you should:<a class="anchor" aria-label="anchor" href="#after-completing-this-session-you-should"></a>
+</h3>
+<div class="callout-content">
+<ul><li>Have an understanding of what Docker containers are, why they are
+useful and the common terminology used</li>
+<li>Have a working Docker installation on your local system to allow you
+to use containers</li>
+<li>Understand how to use existing Docker containers for common
+tasks</li>
+<li>Be able to build your own Docker containers by understanding both
+the role of a <code>Dockerfile</code> in building containers, and the
+syntax used in <code>Dockerfile</code>s</li>
+<li>Understand how to manage Docker containers on your local system</li>
+<li>Appreciate issues around reproducibility in software, understand how
+containers can address some of these issues and what the limits to
+reproducibility using containers are</li>
+</ul></div>
+</div>
+</div>
 <p>The practical work in this lesson is primarily aimed at using Docker
 on your own laptop. Beyond your laptop, software container technologies
 such as Docker can also be used in the cloud and on high performance
@@ -645,8 +669,8 @@ <h3 id="a-quick-tutorial-on-copypasting-file-contents-from-episodes-of-the-lesso
   "url": "https://preview.carpentries.org/docker-introduction/index.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/index.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/06-containers-on-the-cloud.html b/instructor/06-containers-on-the-cloud.html
index da387873..205a8022 100644
--- a/instructor/06-containers-on-the-cloud.html
+++ b/instructor/06-containers-on-the-cloud.html
@@ -496,7 +496,7 @@ <h3 id="edit-your-repositorys-bitbucket-pipelines-yml-file-through-the-web">Edit
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/06-containers-on-the-cloud.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/08-orchestration.html b/instructor/08-orchestration.html
index d92248a2..f29082ea 100644
--- a/instructor/08-orchestration.html
+++ b/instructor/08-orchestration.html
@@ -427,7 +427,7 @@ <h3 class="callout-title">The Wild West<a class="anchor" aria-label="anchor" hre
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/08-orchestration.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/404.html b/instructor/404.html
index c4caef64..a6da5577 100644
--- a/instructor/404.html
+++ b/instructor/404.html
@@ -339,8 +339,8 @@ <h1>Page not found</h1>
   "url": "https://preview.carpentries.org/docker-introduction/instructor/404.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/404.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index d2f1042f..83cffd54 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -377,7 +377,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/CODE_OF_CONDUCT.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 0789afbc..b62e7f19 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -428,7 +428,7 @@ <h1>Licenses</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/LICENSE.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/about.html b/instructor/about.html
index e2b026bb..aa17454c 100644
--- a/instructor/about.html
+++ b/instructor/about.html
@@ -370,7 +370,7 @@ <h1>About</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/about.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/advanced-containers.html b/instructor/advanced-containers.html
index f466fe93..f4ded80a 100644
--- a/instructor/advanced-containers.html
+++ b/instructor/advanced-containers.html
@@ -519,7 +519,7 @@ <h3 class="callout-title">Exercise: Explore the script<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>This script comes from <a href="https://wiki.python.org/moin/SimplePrograms" class="external-link">the Python Wiki</a>
 and is set to add all numbers that are passed to it as arguments.</p>
@@ -546,7 +546,7 @@ <h3 class="callout-title">Exercise: Checking the options<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here’s a breakdown of each piece of the command above</p>
 <ul><li>
@@ -588,7 +588,7 @@ <h3 class="callout-title">Exercise: Interactive jobs<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The docker command to run the container interactively is:</p>
 <div class="codewrapper sourceCode" id="cb8">
@@ -691,7 +691,7 @@ <h3 class="callout-title">Exercise: Did it work?<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>You can start the container interactively like so:</p>
 <div class="codewrapper sourceCode" id="cb14">
@@ -974,7 +974,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/advanced-containers.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/aio.html b/instructor/aio.html
index 6e8a2fa7..b3c09aae 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -368,7 +368,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-introduction"><p>Content from <a href="introduction.html">Introducing Containers</a></p>
 <hr>
-<p>Last updated on 2024-06-19 |
+<p>Last updated on 2024-06-26 |
         
         <a href="https://github.com/fishtree-attempt/docker-introduction/edit/main/episodes/introduction.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
@@ -508,10 +508,10 @@ <h3 class="callout-title">Software and Science<a class="anchor" aria-label="anch
 </section><section id="what-is-a-container-what-is-docker"><h2 class="section-heading">What is a Container? What is Docker?<a class="anchor" aria-label="anchor" href="#what-is-a-container-what-is-docker"></a>
 </h2>
 <hr class="half-width">
-<p>[Docker][Docker] is a tool that allows you to build what are called
-“containers.” It’s not the only tool that can create containers, but is
-the one we’ve chosen for this workshop. But what <em>is</em> a
-container?</p>
+<p><a href="https://www.docker.com/" class="external-link">Docker</a> is a tool that allows
+you to build what are called “containers.” It’s not the only tool that
+can create containers, but is the one we’ve chosen for this workshop.
+But what <em>is</em> a container?</p>
 <p>To understand containers, let’s first talk briefly about your
 computer.</p>
 <p>Your computer has some standard pieces that allow it to work – often
@@ -1223,7 +1223,7 @@ <h3 class="callout-title">Exercise: Check on Your Images<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>To see if the <code>hello-world</code> container image is now on your
 computer, run:</p>
@@ -1384,7 +1384,7 @@ <h3 class="callout-title">Hello World, Part 2<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Use the same command as above, but with the <code>echo</code> command
 to print a message.</p>
@@ -1479,7 +1479,7 @@ <h3 class="callout-title">Practice Makes Perfect<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution 1 – Interactive</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Run an interactive ubuntu container – you can use
 <code>docker image pull</code> first, or just run it with this
@@ -1517,7 +1517,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution 2 – Run commands</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>Run a ubuntu container, first with a command to read out the Linux
 version:</p>
@@ -2013,7 +2013,7 @@ <h3 class="callout-title">What’s in a name?<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First, search for <code>rocker</code> in Docker Hub. Then look for
 their <code>tidyverse</code> container image. You can look at the list
@@ -2210,7 +2210,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -2316,7 +2316,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -2418,7 +2418,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p>To see your new image, run <code>docker image ls</code>. You
@@ -2800,7 +2800,7 @@ <h3 class="callout-title">Exercise: Explore the script<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>This script comes from <a href="https://wiki.python.org/moin/SimplePrograms" class="external-link">the Python Wiki</a>
 and is set to add all numbers that are passed to it as arguments.</p>
@@ -2827,7 +2827,7 @@ <h3 class="callout-title">Exercise: Checking the options<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here’s a breakdown of each piece of the command above</p>
 <ul>
@@ -2871,7 +2871,7 @@ <h3 class="callout-title">Exercise: Interactive jobs<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The docker command to run the container interactively is:</p>
 <div class="codewrapper sourceCode" id="cb8">
@@ -2975,7 +2975,7 @@ <h3 class="callout-title">Exercise: Did it work?<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>You can start the container interactively like so:</p>
 <div class="codewrapper sourceCode" id="cb14">
@@ -3518,7 +3518,7 @@ <h3 class="callout-title">Positives and negatives<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>This is not an exhaustive list but some of the advantages and
 disadvantages could be:</p>
@@ -3669,8 +3669,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://preview.carpentries.org/docker-introduction/instructor/aio.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/aio.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/creating-container-images.html b/instructor/creating-container-images.html
index f03aad3d..1bf860fa 100644
--- a/instructor/creating-container-images.html
+++ b/instructor/creating-container-images.html
@@ -417,7 +417,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -520,7 +520,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -617,7 +617,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>To see your new image, run <code>docker image ls</code>. You
 should see the name of your new container image under the “REPOSITORY”
@@ -836,7 +836,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/creating-container-images.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/discuss.html b/instructor/discuss.html
index 06f54029..8fa2c4f1 100644
--- a/instructor/discuss.html
+++ b/instructor/discuss.html
@@ -370,7 +370,7 @@ <h1>Discussion</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/discuss.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/docker-hub.html b/instructor/docker-hub.html
index 61fdab84..2ba8fc63 100644
--- a/instructor/docker-hub.html
+++ b/instructor/docker-hub.html
@@ -476,7 +476,7 @@ <h3 class="callout-title">What’s in a name?<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First, search for <code>rocker</code> in Docker Hub. Then look for
 their <code>tidyverse</code> container image. You can look at the list
@@ -619,7 +619,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/docker-hub.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/docker-image-examples.html b/instructor/docker-image-examples.html
index 0568e477..03b90fb2 100644
--- a/instructor/docker-image-examples.html
+++ b/instructor/docker-image-examples.html
@@ -475,7 +475,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/docker-image-examples.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/e01-github-actions.html b/instructor/e01-github-actions.html
index 6c363d88..da00b127 100644
--- a/instructor/e01-github-actions.html
+++ b/instructor/e01-github-actions.html
@@ -603,7 +603,7 @@ <h1 id="reference-material">Reference material<a class="anchor" aria-label="anch
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/e01-github-actions.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/e02-jekyll-lesson-example.html b/instructor/e02-jekyll-lesson-example.html
index 9debf13d..b8897329 100644
--- a/instructor/e02-jekyll-lesson-example.html
+++ b/instructor/e02-jekyll-lesson-example.html
@@ -514,7 +514,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/e02-jekyll-lesson-example.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/images.html b/instructor/images.html
index 2fce166b..345a1e26 100644
--- a/instructor/images.html
+++ b/instructor/images.html
@@ -423,8 +423,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://preview.carpentries.org/docker-introduction/instructor/images.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/images.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/index.html b/instructor/index.html
index 50003427..854d90c7 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -296,6 +296,30 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 goal of using them to effect reproducible computational environments.
 Such environments are useful for ensuring reproducible research outputs,
 for example.</p>
+<div id="after-completing-this-session-you-should" class="callout">
+<div class="callout-square">
+<i class="callout-icon" data-feather="bell"></i>
+</div>
+<div id="after-completing-this-session-you-should" class="callout-inner">
+<h3 class="callout-title">After completing this session you should:<a class="anchor" aria-label="anchor" href="#after-completing-this-session-you-should"></a>
+</h3>
+<div class="callout-content">
+<ul><li>Have an understanding of what Docker containers are, why they are
+useful and the common terminology used</li>
+<li>Have a working Docker installation on your local system to allow you
+to use containers</li>
+<li>Understand how to use existing Docker containers for common
+tasks</li>
+<li>Be able to build your own Docker containers by understanding both
+the role of a <code>Dockerfile</code> in building containers, and the
+syntax used in <code>Dockerfile</code>s</li>
+<li>Understand how to manage Docker containers on your local system</li>
+<li>Appreciate issues around reproducibility in software, understand how
+containers can address some of these issues and what the limits to
+reproducibility using containers are</li>
+</ul></div>
+</div>
+</div>
 <p>The practical work in this lesson is primarily aimed at using Docker
 on your own laptop. Beyond your laptop, software container technologies
 such as Docker can also be used in the cloud and on high performance
@@ -749,8 +773,8 @@ <h3 id="a-quick-tutorial-on-copypasting-file-contents-from-episodes-of-the-lesso
   "url": "https://preview.carpentries.org/docker-introduction/instructor/index.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/index.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/introduction.html b/instructor/introduction.html
index ff14cd69..5e4784bf 100644
--- a/instructor/introduction.html
+++ b/instructor/introduction.html
@@ -309,7 +309,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introducing Containers</h1>
-        <p>Last updated on 2024-06-19 |
+        <p>Last updated on 2024-06-26 |
         
         <a href="https://github.com/fishtree-attempt/docker-introduction/edit/main/episodes/introduction.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -446,10 +446,10 @@ <h3 class="callout-title">Software and Science<a class="anchor" aria-label="anch
 communications networks in a uniform manner.</p>
 </section><section id="what-is-a-container-what-is-docker"><h2 class="section-heading">What is a Container? What is Docker?<a class="anchor" aria-label="anchor" href="#what-is-a-container-what-is-docker"></a>
 </h2>
-<hr class="half-width"><p>[Docker][Docker] is a tool that allows you to build what are called
-“containers.” It’s not the only tool that can create containers, but is
-the one we’ve chosen for this workshop. But what <em>is</em> a
-container?</p>
+<hr class="half-width"><p><a href="https://www.docker.com/" class="external-link">Docker</a> is a tool that allows
+you to build what are called “containers.” It’s not the only tool that
+can create containers, but is the one we’ve chosen for this workshop.
+But what <em>is</em> a container?</p>
 <p>To understand containers, let’s first talk briefly about your
 computer.</p>
 <p>Your computer has some standard pieces that allow it to work – often
@@ -654,8 +654,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://preview.carpentries.org/docker-introduction/instructor/introduction.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/introduction.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/key-points.html b/instructor/key-points.html
index 6a9c1ae1..8832ab69 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -514,8 +514,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://preview.carpentries.org/docker-introduction/instructor/key-points.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/key-points.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/managing-containers.html b/instructor/managing-containers.html
index 1f663f48..381991e1 100644
--- a/instructor/managing-containers.html
+++ b/instructor/managing-containers.html
@@ -608,7 +608,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/managing-containers.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/meet-docker.html b/instructor/meet-docker.html
index fcbaa1e5..6c17b6e2 100644
--- a/instructor/meet-docker.html
+++ b/instructor/meet-docker.html
@@ -795,7 +795,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/meet-docker.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/profiles.html b/instructor/profiles.html
index 7a1a90a8..cd3cdfe6 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -326,8 +326,8 @@ <h1>Learner Profiles</h1>
   "url": "https://preview.carpentries.org/docker-introduction/instructor/profiles.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/profiles.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/reference.html b/instructor/reference.html
index 081fdf88..d49d793c 100644
--- a/instructor/reference.html
+++ b/instructor/reference.html
@@ -556,7 +556,7 @@ <h1>Glossary</h1>
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/reference.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/reproduciblity.html b/instructor/reproduciblity.html
index eef678d1..1d3b9869 100644
--- a/instructor/reproduciblity.html
+++ b/instructor/reproduciblity.html
@@ -501,7 +501,7 @@ <h3 class="callout-title">Positives and negatives<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>This is not an exhaustive list but some of the advantages and
 disadvantages could be:</p>
@@ -643,7 +643,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/reproduciblity.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/instructor/running-containers.html b/instructor/running-containers.html
index 509f700f..3dba232c 100644
--- a/instructor/running-containers.html
+++ b/instructor/running-containers.html
@@ -433,7 +433,7 @@ <h3 class="callout-title">Exercise: Check on Your Images<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>To see if the <code>hello-world</code> container image is now on your
 computer, run:</p>
@@ -581,7 +581,7 @@ <h3 class="callout-title">Hello World, Part 2<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Use the same command as above, but with the <code>echo</code> command
 to print a message.</p>
@@ -673,7 +673,7 @@ <h3 class="callout-title">Practice Makes Perfect<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution 1 – Interactive</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Run an interactive ubuntu container – you can use
 <code>docker image pull</code> first, or just run it with this
@@ -711,7 +711,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution 2 – Run commands</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>Run a ubuntu container, first with a command to read out the Linux
 version:</p>
@@ -845,7 +845,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://preview.carpentries.org/docker-introduction/instructor/running-containers.html",
   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/introduction.html b/introduction.html
index 367cde3c..a0afa79a 100644
--- a/introduction.html
+++ b/introduction.html
@@ -309,7 +309,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introducing Containers</h1>
-        <p>Last updated on 2024-06-19 |
+        <p>Last updated on 2024-06-26 |
         
         <a href="https://github.com/fishtree-attempt/docker-introduction/edit/main/episodes/introduction.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -444,10 +444,10 @@ <h3 class="callout-title">Software and Science<a class="anchor" aria-label="anch
 communications networks in a uniform manner.</p>
 </section><section id="what-is-a-container-what-is-docker"><h2 class="section-heading">What is a Container? What is Docker?<a class="anchor" aria-label="anchor" href="#what-is-a-container-what-is-docker"></a>
 </h2>
-<hr class="half-width"><p>[Docker][Docker] is a tool that allows you to build what are called
-“containers.” It’s not the only tool that can create containers, but is
-the one we’ve chosen for this workshop. But what <em>is</em> a
-container?</p>
+<hr class="half-width"><p><a href="https://www.docker.com/" class="external-link">Docker</a> is a tool that allows
+you to build what are called “containers.” It’s not the only tool that
+can create containers, but is the one we’ve chosen for this workshop.
+But what <em>is</em> a container?</p>
 <p>To understand containers, let’s first talk briefly about your
 computer.</p>
 <p>Your computer has some standard pieces that allow it to work – often
@@ -652,8 +652,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://preview.carpentries.org/docker-introduction/introduction.html",
   "identifier": "https://preview.carpentries.org/docker-introduction/introduction.html",
   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
+  "datePublished": "2024-06-26"
 }
 
   </script><script>
diff --git a/key-points.html b/key-points.html
index 30f557d0..c5d87aaa 100644
--- a/key-points.html
+++ b/key-points.html
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-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
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diff --git a/managing-containers.html b/managing-containers.html
index 7f710f22..a9968a05 100644
--- a/managing-containers.html
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@@ -606,7 +606,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2013-07-14",
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diff --git a/md5sum.txt b/md5sum.txt
index c7c6eda7..6faf5034 100644
--- a/md5sum.txt
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diff --git a/meet-docker.html b/meet-docker.html
index c8160eb1..37d6de72 100644
--- a/meet-docker.html
+++ b/meet-docker.html
@@ -793,7 +793,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/pkgdown.yml b/pkgdown.yml
index ea925914..0b24e213 100644
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@@ -2,5 +2,5 @@ pandoc: 3.1.12.1
 pkgdown: 2.0.7
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 articles: {}
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diff --git a/profiles.html b/profiles.html
index c9ea1a1a..def5eb77 100644
--- a/profiles.html
+++ b/profiles.html
@@ -326,8 +326,8 @@ <h1>Learner Profiles</h1>
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   "dateCreated": "2013-07-14",
-  "dateModified": "2024-06-19",
-  "datePublished": "2024-06-19"
+  "dateModified": "2024-06-26",
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 }
 
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diff --git a/reference.html b/reference.html
index a33e0da0..5f9c5fd3 100644
--- a/reference.html
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@@ -554,7 +554,7 @@ <h1>Glossary</h1>
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   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
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diff --git a/reproduciblity.html b/reproduciblity.html
index 1d36c56a..09024841 100644
--- a/reproduciblity.html
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@@ -499,7 +499,7 @@ <h3 class="callout-title">Positives and negatives<a class="anchor" aria-label="a
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>This is not an exhaustive list but some of the advantages and
 disadvantages could be:</p>
@@ -641,7 +641,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2013-07-14",
   "dateModified": "2024-06-18",
-  "datePublished": "2024-06-19"
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diff --git a/running-containers.html b/running-containers.html
index 42f5751b..9bf0f15f 100644
--- a/running-containers.html
+++ b/running-containers.html
@@ -431,7 +431,7 @@ <h3 class="callout-title">Exercise: Check on Your Images<a class="anchor" aria-l
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   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>To see if the <code>hello-world</code> container image is now on your
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@@ -579,7 +579,7 @@ <h3 class="callout-title">Hello World, Part 2<a class="anchor" aria-label="ancho
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Use the same command as above, but with the <code>echo</code> command
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@@ -671,7 +671,7 @@ <h3 class="callout-title">Practice Makes Perfect<a class="anchor" aria-label="an
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-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <div class="accordion-body">
 <p>Run an interactive ubuntu container – you can use
 <code>docker image pull</code> first, or just run it with this
@@ -709,7 +709,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
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 <div class="accordion-body">
 <p>Run a ubuntu container, first with a command to read out the Linux
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@@ -843,7 +843,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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