Docker error response

API scripts in my games are crashing due to this error.  docker: Error response from daemon: Conflict. The name "/campaign-3740544-h5bBYtJNLsPeUDuAMjfUHQ" is already in use by container d988554e6496c85048b6d80404216d2034dd06392a119fa3fe0c41f298da698e. You have to remove (or rename) that container to be able to reuse that name.. See 'docker run --help'. ------- I don't know what docker is and I can't get a response from it either. 

All of my games were reporting it. I use a consistent set of API's. It hasn't happened since I reported it, so I think it is a non issue.