multi-arch docker build

.github/workflows/docker-image.yml

@@ -25,14 +25,18 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Build image
-        run: docker build . --file Dockerfile --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
 
       - name: Log in to registry
         # This is where you will update the PAT to GITHUB_TOKEN
         run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
 
-      - name: Push image
+      - name: Build and Push container image
         run: |
           IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
 
@@ -46,5 +50,6 @@ jobs:
           [ "$VERSION" == "master" ] && VERSION=latest
           echo IMAGE_ID=$IMAGE_ID
           echo VERSION=$VERSION
-          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
-          docker push $IMAGE_ID:$VERSION
+          docker buildx build --file Dockerfile --label "runnumber=${GITHUB_RUN_ID}" --push \
+          --tag $IMAGE_ID:$VERSION \
+          --platform linux/amd64,linux/arm64,linux/armv7 .