Merge pull request 'also limit container registry push to push events' (#2) from ci_limit_push into main

Reviewed-on: #2

.drone.yml

@@ -44,6 +44,8 @@ steps:
     when:
       branch:
         - main
+      event:
+        - push
     image: registry.gitlab.com/role_unit/role_unit_containers:build
     privileged: true
     volumes: