diff --git a/.forgejo/workflows/main.yaml b/.forgejo/workflows/main.yaml
index bd3d2d3..510b3b8 100644
--- a/.forgejo/workflows/main.yaml
+++ b/.forgejo/workflows/main.yaml
@@ -2,7 +2,7 @@ on: [push]
 jobs:
   job:
     container:
-      image: debian:bookworm
+      image: ${{vars.DOCKER||'docker.io'}}/debian:bookworm
     steps:
     - name: cd
       env: