update action to handle path of application/Dockerfile

Author: dprosper

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

@@ -27,7 +27,8 @@ jobs:
       - name: Build and push image
         uses: docker/[email protected]
         with:
-          context: .
+          context: ./app
+          file: ./app/Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}