diff --git a/.forgejo/workflows/debian_bookworm.yaml b/.forgejo/workflows/debian_bookworm.yaml
index 7d352ee..7c22e8a 100644
--- a/.forgejo/workflows/debian_bookworm.yaml
+++ b/.forgejo/workflows/debian_bookworm.yaml
@@ -2,7 +2,7 @@ on: [push]
 jobs:
   job:
     container:
-      image: debian:bookworm
+      image: ${{vars.DOCKER||docker.io/}}debian:bookworm
     steps:
     - name: spcd
       env: