add release docker publish

.github/workflows/docker-push-main.yml

@@ -1,4 +1,4 @@
-name: Publish Docker image
+name: Publish docker image (latest)
 
 env:
   DOCKER_IMAGE: katanemo/archgw

.github/workflows/docker-push-release.yml

@@ -0,0 +1,87 @@
+name: Publish docker image (release)
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  # Build ARM64 image on native ARM64 runner
+  build-arm64:
+    runs-on: [linux-arm64]
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.DOCKER_IMAGE }}
+
+      - name: Build and Push ARM64 Image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./arch/Dockerfile
+          platforms: linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}-arm64
+
+  # Build AMD64 image on GitHub's AMD64 runner
+  build-amd64:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.DOCKER_IMAGE }}
+
+      - name: Build and Push AMD64 Image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./arch/Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}-amd64
+
+
+  # Combine ARM64 and AMD64 images into a multi-arch manifest
+  create-manifest:
+    runs-on: ubuntu-latest
+    needs: [build-arm64, build-amd64]  # Wait for both builds
+    steps:
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.DOCKER_IMAGE }}
+
+      - name: Create Multi-Arch Manifest
+        run: |
+          # Combine the architecture-specific images into a single manifest
+          docker buildx imagetools create -t ${{ steps.meta.outputs.tags }} \
+            ${{ env.DOCKER_IMAGE }}:arm64 \
+            ${{ env.DOCKER_IMAGE }}:amd64