From 9fdc1e29720eff766898c5839e1eba0e0929e8e4 Mon Sep 17 00:00:00 2001
From: cnichols <cnichols@newrelic.com>
Date: Thu, 27 Apr 2023 16:53:25 -0700
Subject: [PATCH] Add multi-platform build/push

Add release instructions

Separate build/release commands
---
 Makefile  | 9 ++++++++-
 README.md | 4 ++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index ae50410..05254fc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,14 @@
 image_name=newrelic/fastly-to-insights
 
+require_tag:
+	@if [ -z "$(tag)" ]; then echo "tag must be set" && exit 1; fi
+	@if [ "$(tag)" != "$(shell git describe --tags --exact-match)" ]; then echo "please checkout requested tag: $(tag)" && exit 1; fi
+
+release: require_tag
+	docker buildx build --platform linux/amd64,linux/arm64 --push -t $(image_name):$(tag) .
+
 build:
-	docker build -t $(image_name) .
+	docker buildx build --platform linux/amd64,linux/arm64 -t $(image_name) .
 
 run: build
 	docker run --rm --env-file .env --name fastly-to-insights $(image_name)
diff --git a/README.md b/README.md
index adde442..d1280f8 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,10 @@ You are welcome to send pull requests to us - however, by doing so you agree tha
 
 A Makefile is provided which you can use to build and run the fastly to insights integration locally -- `make run` will build and then run the image. You can provide configuration via a `.env` file (`.env.example` provided as an example).
 
+## Releasing
+
+To release a new image, make sure you've created a tag for your release, check it out and then run `make release tag=<your-tag>`. This will build the Docker image and push it to DockerHub.
+
 ## More Information
 
 For more information on the Fastly Real-Time Analytics API, look [here](https://docs.fastly.com/api/analytics).