diff --git a/.gitea/workflows/docker-builder.yml b/.gitea/workflows/docker-builder.yml
index 2866249..a483756 100644
--- a/.gitea/workflows/docker-builder.yml
+++ b/.gitea/workflows/docker-builder.yml
@@ -16,10 +16,8 @@ jobs:
 
       - name: Set image tag from branch
         run: |
-          echo "GITEA_REF=$GITEA_REF"
-
-          # strip refs/heads/
-          VERSION="${GITEA_REF#refs/heads/}"
+          # hole den Branch-Namen über Git
+          VERSION=$(git rev-parse --abbrev-ref HEAD)
 
           if [ -z "$VERSION" ]; then
             echo "ERROR: could not determine branch name"