try to fix container registry

.gitlab-ci.yml

@@ -85,8 +85,7 @@ clean_docker_registry:
   stage: build
   tags:
     - docker-privileged
-  rules:
-    when: always
+  when: always
   image: docker:19.03.12
   script:
     - docker login -u $GPT_REGISTRY_USER -p $GDT_REGISTRY_PASSWORD $CI_REGISTRY