I will try again today then. There is a 2nd person trying to troubleshoot things, and there is a bit of a habit in just turning things off without telling everyone involved, so perhaps the deletion of the cluster was a result of that.
I haven't changed anything from the default Docker configuration, the only things I have modified within the setup at all is the Cluster Token and the server name. I am not sure what the RakNet thing is, but since there are supposed to be two items running at once, I will just leave it be for now and see if the game has any issues with me trying to get into the caves area.