build x86 and arm image

Author: CrowdSalat

.github/workflows/build_push_to_ecr.yaml

@@ -57,7 +57,7 @@ jobs:
         uses: docker/[email protected]
         with:
           context: .
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}