ci: build images in one matrix job per architecture

.github/workflows/workflow.yml

@@ -83,7 +83,7 @@ jobs:
           CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-  build-and-push-image:
+  build:
     needs:
       - pre-commit
       - cypress
@@ -93,15 +93,26 @@ jobs:
       contents: read
       packages: write
 
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm64
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4.1.7
 
+      - name: Prepare
+        run: |
+          platform=${{ matrix.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@68827325e0b33c7199eb31dd4e31fbe9023e06e3 # v3.0.0
 
       - name: Set up Docker Buildx
-        id: buildx
         uses: docker/setup-buildx-action@d70bba72b1f3fd22344832f00baa16ece964efeb # v3.3.0
 
       - name: Log in to the Container registry
@@ -111,6 +122,52 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5.5.1
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6.9.0
+        with:
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=${{ github.repository_owner == 'envelope-zero' && contains(github.ref, 'refs/tags/') }}
+          build-args: |
+            VITE_VERSION=${{ github.ref_name }}
+
+      - name: Export digest
+        run: |
+          mkdir -p /tmp/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+
+      - name: Upload digest
+        uses: actions/upload-artifact@v4.4.3
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    if: github.repository_owner == 'envelope-zero' && contains(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v4.1.8
+        with:
+          path: /tmp/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3.7.1
+
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5.5.1
@@ -121,12 +178,19 @@ jobs:
             type=ref,event=pr
             type=semver,pattern={{version}}
 
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v5.3.0
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3.2.0
         with:
-          platforms: linux/amd64,linux/arm64
-          push: ${{ github.repository_owner == 'envelope-zero' && contains(github.ref, 'refs/tags/') }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          build-args: |
-            VITE_VERSION=${{ github.ref_name }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create manifest list and push
+        working-directory: /tmp/digests
+        run: |
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            $(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}

renovate.json

@@ -5,6 +5,7 @@
     "group:recommended",
     "replacements:all",
     "workarounds:all",
+    "helpers:pinGitHubActionDigests",
     ":ignoreModulesAndTests"
   ],
   "dependencyDashboard": true,