Update docker.yml

.github/workflows/docker.yml

@@ -21,6 +21,9 @@ jobs:
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
+        with:
+          context: ./ckan
+          file: ./ckan/Dockerfile
       -
         name: Checkout
         uses: actions/checkout@v1
@@ -44,4 +47,4 @@ jobs:
         with:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}