fix docker.yml.

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a915ba26ea8c06807f434041bde3597b129d9517..be801ca08f57d6a171444c7633d9352db40093af 100644 (file)
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -33,7 +33,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           context: ./contrib/docker/
-          file: {context}/Dockerfile.root
+          file: Dockerfile.root
           cache-from: type=registry,ref=dealii/dealii:master-focal
           cache-to: type=inline
           push: true