Attach source during build to the release

.github/workflows/nightly.yml

@@ -39,6 +39,14 @@ jobs:
       - id: fetch-matrix
         run: echo "images=$(./images.rb)" >> "$GITHUB_OUTPUT"
 
+      - name: Download source
+        run: curl -o ruby.tar.xz https://cache.ruby-lang.org/pub/ruby/snapshot/snapshot-master.tar.xz
+      - uses: actions/upload-artifact@v4
+        with:
+          name: snapshot-master
+          path: ruby.tar.xz
+          retention-days: 1
+
   build:
     needs: set-up-matrix
     runs-on: ubuntu-latest
@@ -74,6 +82,11 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ github.token }}
 
+      - uses: actions/download-artifact@v4
+        with:
+          name: snapshot-master
+          path: ./master/${{ matrix.image.variant }}
+
       - name: Build and push by digest
         id: build
         uses: docker/build-push-action@v6
@@ -165,6 +178,10 @@ jobs:
 
           See more at https://github.com/docker-ruby-nightly/ruby/pkgs/container/ruby/versions?filters[version_type]=tagged
           EOT
+      
+      - uses: actions/download-artifact@v4
+        with:
+          name: snapshot-master
 
       - id: latest-release
         env:
@@ -176,4 +193,4 @@ jobs:
         if: (github.event_name == 'schedule' || inputs.push == true) && steps.latest-release.outputs.latest_release != needs.set-up-matrix.outputs.date
         env:
           GH_TOKEN: ${{ github.token }}
-        run: gh release create ${{ needs.set-up-matrix.outputs.date }} --title="${{ needs.set-up-matrix.outputs.date }}" --notes-file=notes.txt
+        run: gh release create ${{ needs.set-up-matrix.outputs.date }} ruby.tar.xz --title="${{ needs.set-up-matrix.outputs.date }}" --notes-file=notes.txt

.github/workflows/verify-templating.yml

@@ -2,7 +2,7 @@ name: Verify Templating
 
 on:
   pull_request:
-  push:
+  # push:
 
 defaults:
   run:

Dockerfile.template

@@ -58,7 +58,8 @@ ENV RUBY_DOWNLOAD_SHA256 {{ .sha256.xz }}
 
 # some of ruby's build scripts are written in ruby
 #   we purge system ruby later to make sure our final image uses what we just built
-RUN set -eux; \
+RUN --mount=type=bind,source=ruby.tar.xz,target=ruby.tar.xz \
+	set -eux; \
 	\
 {{ if is_alpine then ( -}}
 	apk add --no-cache --virtual .ruby-builddeps \
@@ -197,12 +198,10 @@ RUN set -eux; \
 	fi; \
 {{ ) else "" end -}}
 	\
-	wget -O ruby.tar.xz "$RUBY_DOWNLOAD_URL"; \
 	echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
 	\
 	mkdir -p /usr/src/ruby; \
 	tar -xJf ruby.tar.xz -C /usr/src/ruby --strip-components=1; \
-	rm ruby.tar.xz; \
 	\
 	cd /usr/src/ruby; \
 	\

nightly-versions.rb

@@ -11,15 +11,14 @@
 res = Net::HTTP.get_response(uri)
 raise StandardError, "Got status code #{res.code}: #{res.body}" unless res.code == "200"
 
-master = JSON.parse(res.body).first
-master["url"] = master["filename"].transform_values { |file| "https://cache.ruby-lang.org/pub/ruby/snapshot/#{file}" }
-master.delete("filename")
-master.merge!({
+upstream = JSON.parse(res.body).first
+master = donor.slice("variants", "rust", "rustup")
+master.merge!(
   "version" => "master",
-  "variants" => donor["variants"],
-  "rust" => donor["rust"],
-  "rustup" => donor["rustup"],
-})
+  "date" => upstream["date"],
+  "url" => { "xz" => "file://#{ENV["GITHUB_WORKSPACE"]}/ruby.tar.xz" },
+  "sha256" => { "xz" => upstream["sha256"]["xz"] },
+)
 result = { "master" => master }.to_json
 # For step output
 puts result