diff --git a/.gitea/workflows/docker-builder.yml b/.gitea/workflows/docker-builder.yml
index 719b6c6..e4a1cdb 100644
--- a/.gitea/workflows/docker-builder.yml
+++ b/.gitea/workflows/docker-builder.yml
@@ -250,7 +250,13 @@ jobs:
       
       - name: Sign image
         if: env.IS_TAG == 'true'
+        shell: bash
         run: |
-          echo "Signing image ${IMAGE_NAME}:${VERSION}"
-          cosign sign --key ${{ secrets.COSIGN_KEY }} ${IMAGE_NAME}:${VERSION}
+          echo "== Signing image =="
+          IMAGE_NAME="${REGISTRY_HOST}/${IMAGE_BASE}"
+          VERSION="$VERSION"  # kommt vom Detect version Step
+
+          echo "Signing image ${IMAGE_NAME}:${VERSION}"
+          cosign sign --key ${{ secrets.COSIGN_KEY }} "${IMAGE_NAME}:${VERSION}"
+