Enable arm64 build

Author: vizv

.github/workflows/publish-container-image.yaml

@@ -23,6 +23,8 @@ jobs:
     - name: Install cosign
       if: github.event_name != 'pull_request'
       uses: sigstore/cosign-installer@v3
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
     - name: Log into registry ${{env.REGISTRY}}
@@ -39,9 +41,9 @@ jobs:
         images: ${{env.REGISTRY}}/${{env.IMAGE_NAME}}
     - name: Build and push Docker image
       id: build-and-push
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
-        context: .
+        platforms: linux/amd64,linux/arm64
         push: ${{github.event_name != 'pull_request'}}
         tags: ${{steps.meta.outputs.tags}}
         labels: ${{steps.meta.outputs.labels}}