Produce multi-arch images

.github/workflows/docker-image.yml

@@ -16,35 +16,49 @@ jobs:
     strategy:
       matrix:
         tag: ["alpine", "clang-tools", "cpp", "package", "qt", "snap", "docker-cli", "sphinx"]
+        include:
+          - tag: alpine
+            platforms: linux/amd64,linux/arm64
+          - tag: cpp
+            platforms: linux/amd64,linux/arm64
     permissions:
       contents: read
       packages: write
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        if: matrix.platforms != ''
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        if: matrix.platforms != ''
 
       - name: Log in to the Container registry
-        uses: docker/login-action@v2
+        uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=raw,value=${{ matrix.tag }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           file: Dockerfile.${{ matrix.tag }}
           push: true
           pull: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          platforms: ${{ matrix.platforms }}