feat(docker): use matrix for building multi-platform Docker images

.github/workflows/docker.yml

@@ -13,27 +13,31 @@ on:
     - cron: "0 0 * * 0"
 
 jobs:
-  docker:
-    name: Docker Build and Push
-    runs-on: ubuntu-22.04
+  build:
+    name: Build
+    runs-on: ${{ matrix.build.OS }}
+    strategy:
+      fail-fast: false
+      matrix:
+        build:
+          - { PLATFORM: linux/amd64, OS: ubuntu-22.04 }
+          - { PLATFORM: linux/arm64, OS: macos-14 }
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Prepare
+        run: |
+          platform=${{ matrix.build.PLATFORM }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: |
             orhunp/git-cliff
             ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff
-          tags: |
-            type=schedule
-            type=ref,event=branch
-            type=ref,event=pr
-            type=sha
-            type=raw,value=latest
-            type=semver,pattern={{version}}
 
       - name: Set up Docker Buildx
         id: buildx
@@ -62,25 +66,95 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build and push
-        id: docker_build
+      - name: Build and push by digest
+        id: build
         uses: docker/build-push-action@v6
         with:
           context: ./
           file: ./Dockerfile
+          platforms: ${{ matrix.build.PLATFORM }}
           builder: ${{ steps.buildx.outputs.name }}
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          sbom: true
-          provenance: true
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
+          outputs: type=image,name=orhunp/git-cliff,name=ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff,push-by-digest=${{ github.event_name != 'pull_request' }},name-canonical=true
+          sbom: true
+          provenance: true
+
+      - name: Export digest
+        run: |
+          digest="${{ steps.build.outputs.digest }}"
+          mkdir -p /tmp/digests
+          touch "/tmp/digests/${digest#sha256:}"
+          cat "/tmp/digests/${digest#sha256:}"
+
+      - name: Upload digest
+        uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ env.PLATFORM_PAIR }}
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    name: Merge
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    needs:
+      - build
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v4
+        with:
+          path: /tmp/digests
+          pattern: digests-*
+          merge-multiple: true
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            orhunp/git-cliff
+            ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+            type=raw,value=latest
+            type=semver,pattern={{version}}
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create manifest list and push
+        working-directory: /tmp/digests
+        shell: bash
+        run: |
+          for image in orhunp/git-cliff ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff; do
+            docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+              $(printf "${image}@sha256:%s " *)
+          done
+
+      - name: Inspect image
+        shell: bash
+        run: |
+          for image in orhunp/git-cliff ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff; do
+            docker buildx imagetools inspect "${image}:${{ steps.meta.outputs.version }}"
+          done
 
       - name: Scan the image
         uses: anchore/sbom-action@v0
         with:
           image: ghcr.io/${{ github.repository_owner }}/git-cliff/git-cliff
-
-      - name: Image digest
-        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

@@ -11,7 +11,7 @@ COPY --from=planner /app/recipe.json recipe.json
 ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
 RUN cargo chef cook --release --recipe-path recipe.json
 COPY . .
-RUN cargo build --release --locked --no-default-features --features github --features gitlab --features bitbucket
+RUN cargo build --verbose --release --locked --no-default-features --features github --features gitlab --features bitbucket
 RUN rm -f target/release/deps/git_cliff*
 
 FROM debian:buster-slim as runner