diff --git a/.github/workflows/mdbook.yml b/.github/workflows/mdbook.yml
index 87df746..db94ce1 100644
--- a/.github/workflows/mdbook.yml
+++ b/.github/workflows/mdbook.yml
@@ -45,7 +45,7 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: ./mdbook
-          file: "{context}/Containerfile"
+          file: ./mdbook/Containerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}