Update: building with matrix & armv6 support

.github/workflows/docker-image.yaml

@@ -6,58 +6,111 @@ on:
     paths:
       - 'release-versions/*'
 
+env:
+  REGISTRY_IMAGE: laoliu233/surgio-docker
+
 jobs:
-  push_to_registries:
-    name: Push Docker image to multiple registries
+  build:
     runs-on: ubuntu-latest
-    permissions:
-      packages: write
-      contents: read
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm/v6
+          - linux/arm/v7
+          - linux/arm64
     steps:
-      - name: Check out the repo
+      -
+        name: Checkout
         uses: actions/checkout@v3
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Get latest release version
+      -
+        name: Get latest release version
         run: |
           VERSION=$(cat release-versions/surgio-latest.txt)
           echo "VERSION=$VERSION" >> $GITHUB_ENV
-
-      - name: Log in to Docker Hub
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      -
+        name: Login to Docker Hub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-      - name: Log in to GitHub Container Registry
-        uses: docker/login-action@v2
+      -
+        name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v4
         with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Extract metadata (tags, labels) for Docker
+          context: .
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
+      -
+        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@v3
+        with:
+          name: digests
+          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@v3
+        with:
+          name: digests
+          path: /tmp/digests
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      -
+        name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v4
         with:
           images: |
-            laoliu233/surgio-docker
+            ${{ env.REGISTRY_IMAGE }}
             ghcr.io/${{ github.repository }}
           tags: |
             type=raw,value=${{ env.VERSION }}
             type=raw,value=latest
             type=sha
-
-      - name: Build and push Docker images
-        uses: docker/build-push-action@v4
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v2
         with:
-          context: .
-          platforms: linux/amd64,linux/arm64,linux/arm/v7
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          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_IMAGE }}@sha256:%s ' *)
+      -
+        name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}