diff --git a/.forgejo/workflows/build.yaml b/.forgejo/workflows/build.yaml
index 67ace8b..5df8b90 100644
--- a/.forgejo/workflows/build.yaml
+++ b/.forgejo/workflows/build.yaml
@@ -31,5 +31,6 @@ jobs:
         uses: "https://code.forgejo.org/docker/build-push-action@v6"
         with:
           context: "."
+          file: "./Containerfile"
           push: true
           tags: "git.moritzruth.de/moritzruth/sscdc:${{ github.ref_name }}"