Sometimes the cleanup command fails with Error response from daemon: conflict: unable to delete 240aa2659704 (must be forced) - image is referenced in multiple repositories. According to this specifying the repository and the tag should solve the problem.
Summary
Sometimes the cleanup command fails with
Error response from daemon: conflict: unable to delete 240aa2659704 (must be forced) - image is referenced in multiple repositories. According to this specifying the repository and the tag should solve the problem.