Parallel Docker release builds

.github/workflows/build-docker.yml

@@ -1,50 +1,116 @@
+name: docker-release-build-and-push
+
 on:
   release:
     types:
       - created
 
-name: Build docker images
+env:
+  REGISTRY_IMAGE: rqlite/rqlite
+
 jobs:
-  docker:
+  build:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/386
+          - linux/amd64
+          - linux/arm64
+          - linux/arm/v6
+          - linux/arm/v7
     steps:
-    - name: Get current date
-      id: get-date
-      run: echo "::set-output name=date::$(date +'%Y-%m-%dT%T%z')"
+      - name: Get current date
+        id: get-date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%dT%T%z')"
 
-    - name: Get and strip version tag
-      id: strip-v
-      run: |
-          VERSION=${{ github.event.release.tag_name }}
-          STRIPPED_VERSION=${VERSION#v}
-          echo "::set-output name=version::$STRIPPED_VERSION"
+      - name: Get and strip version tag
+        id: strip-v
+        run: |
+            VERSION=${{ github.event.release.tag_name }}
+            STRIPPED_VERSION=${VERSION#v}
+            echo "::set-output name=version::$STRIPPED_VERSION"
 
-    - name: Checkout repository
-      uses: actions/checkout@v4
+      - name: Prepare
+        run: |
+          platform=${{ matrix.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
 
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v3
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY_IMAGE }}
 
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
 
-    - name: Log into Docker Hub
-      uses: docker/login-action@v3
-      with:
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
-    - name: Build and push
-      uses: docker/build-push-action@v5
-      with:
-        context: .
-        platforms: linux/386,linux/amd64,linux/arm64,linux/arm/v6,linux/arm/v7
-        build-args: |
-          VERSION=${{ github.event.release.tag_name }}
-          COMMIT=${{ github.sha }}
-          BRANCH=master
-          DATE=${{ steps.get-date.outputs.date }}
-        push: true
-        tags: |
-          rqlite/rqlite:latest
-          rqlite/rqlite:${{ steps.strip-v.outputs.version }}
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+      
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
+          build-args: |
+            VERSION=${{ github.event.release.tag_name }}
+            COMMIT=${{ github.sha }}
+            BRANCH=master
+            DATE=${{ steps.get-date.outputs.date }}
+      
+      - name: Export digest
+        run: |
+          mkdir -p /tmp/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+      
+      - name: Upload digest
+        uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v4
+        with:
+          path: /tmp/digests
+          pattern: digests-*
+          merge-multiple: true
+      
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY_IMAGE }}
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+
+      - name: Create manifest list and push
+        working-directory: /tmp/digests
+        run: |
+          docker buildx imagetools create -t rqlite/rqlite:latest -t rqlite/rqlite:${{ steps.strip-v.outputs.version }} \
+            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)