Bugfix in gitlab:clean_docker

.gitlab-ci.yml

@@ -204,7 +204,7 @@ clean_docker:
   when: always
   script:
     - docker rm `docker ps -q -f "status=exited"`
-    - docker images -a --format "{{.Repository}}:{{.Tag}}" | grep mdanse | xargs docker rmi -f
+    - docker images -a --format "{{.Repository}}:{{.Tag}}" | grep _mdanse_ | xargs docker rmi -f
     - docker rmi `docker images -q -f "dangling=true"`
   tags:
     - docker