Fix Dockerfile path in CI configuration for correct build context

Author: mcqueide

.github/workflows/ci.yaml

@@ -111,7 +111,7 @@ jobs:
         uses: docker/[email protected]
         with:
           context: .
-          file: .Dockerfile
+          file: Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}