feat: add native arm64 builds using parallel runners

.github/workflows/publish-init4-docker.yml

@@ -14,15 +14,57 @@ permissions:
   packages: write
 
 jobs:
-  build-and-push:
-    name: Build and push Docker image
+  build-amd64:
+    name: Build amd64
     runs-on: ubuntu-latest
+    timeout-minutes: 120
+    outputs:
+      digest: ${{ steps.build.outputs.digest }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract version from tag
+        id: version
+        run: |
+          VERSION=${GITHUB_REF_NAME#v}
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "short_sha=$(echo ${GITHUB_SHA} | cut -c1-8)" >> $GITHUB_OUTPUT
+
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/Dockerfile
+          platforms: linux/amd64
+          push: true
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+          cache-from: type=gha,scope=amd64
+          cache-to: type=gha,scope=amd64,mode=max
+          build-args: |
+            BLOCKSCOUT_VERSION=${{ github.ref_name }}+commit.${{ steps.version.outputs.short_sha }}
+            RELEASE_VERSION=${{ steps.version.outputs.version }}
+
+  build-arm64:
+    name: Build arm64
+    runs-on: ubuntu-24.04-arm
+    timeout-minutes: 120
+    outputs:
+      digest: ${{ steps.build.outputs.digest }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -41,6 +83,36 @@ jobs:
           echo "version=$VERSION" >> $GITHUB_OUTPUT
           echo "short_sha=$(echo ${GITHUB_SHA} | cut -c1-8)" >> $GITHUB_OUTPUT
 
+      - name: Build and push by digest
+        id: build
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/Dockerfile
+          platforms: linux/arm64
+          push: true
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+          cache-from: type=gha,scope=arm64
+          cache-to: type=gha,scope=arm64,mode=max
+          build-args: |
+            BLOCKSCOUT_VERSION=${{ github.ref_name }}+commit.${{ steps.version.outputs.short_sha }}
+            RELEASE_VERSION=${{ steps.version.outputs.version }}
+
+  merge:
+    name: Create multi-arch manifest
+    runs-on: ubuntu-latest
+    needs: [build-amd64, build-arm64]
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Extract metadata for Docker
         id: meta
         uses: docker/metadata-action@v5
@@ -51,17 +123,16 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=raw,value=latest
 
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          file: ./docker/Dockerfile
-          push: true
-          platforms: linux/amd64,linux/arm64
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-          build-args: |
-            BLOCKSCOUT_VERSION=${{ github.ref_name }}+commit.${{ steps.version.outputs.short_sha }}
-            RELEASE_VERSION=${{ steps.version.outputs.version }}
+      - name: Create manifest list and push
+        working-directory: /tmp
+        run: |
+          # Create and push manifest for each tag
+          for tag in $(echo "${{ steps.meta.outputs.tags }}" | tr '\n' ' '); do
+            docker buildx imagetools create -t "$tag" \
+              "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ needs.build-amd64.outputs.digest }}" \
+              "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ needs.build-arm64.outputs.digest }}"
+          done
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest