Try another file value for docker/build-push-action@v6

Author: spantaleev

.github/workflows/workflow.yml

@@ -52,4 +52,4 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           context: .
-          file: "{context}/etc/docker/Dockerfile"
+          file: ./etc/docker/Dockerfile