Enable multi-platform builds for Docker images

Author: klauserber

.github/workflows/container_build.yml

@@ -52,7 +52,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          platforms: linux/amd64  # ,linux/arm64
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.tag_names.outputs.tags }}
           labels: ${{ steps.tag_names.outputs.labels }}

build_multi.sh

@@ -13,7 +13,7 @@ docker buildx build \
   -t ${REGISTRY_NAME}/${IMAGE_NAME}:latest \
   --build-arg IMAGE_NAME=${IMAGE_NAME} \
   --progress plain \
+  --push \
   --platform=linux/arm64,linux/amd64 "${@}"
 
-  # --push \
   # --no-cache --pull \