no main tag for main

Author: lopf

.github/workflows/build-push-image.yml

@@ -34,7 +34,7 @@ jobs:
           images: unicdocker/drupal-php
           tags: |
             type=schedule
-            type=ref,event=branch
+            type=ref,event=branch,enable=${{ github.ref != 'refs/heads/main' }}
             type=ref,event=tag
             type=ref,event=pr
             type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/') }}