Can't launch Adobe CF2018 REST Playground

Hey there, I was wondering if anybody had any tips on launching the Adobe CF2018 REST playground from CF Admin in Commandbox? I have been unable to do so. I can confirm that the restplay directory exists in $SERVER_HOME_DIRECTORY, but I cannot launch the service. I am running adobe@2018.0.9+318650 Commandbox 5.0.1+00137 in an Ubuntu 16.04 Docker container. I have turned on Developer Profile in the Admin settings as well. I can provide more detailed info if necessary, but just wondering if anyone has come across this problem before.

Thanks,

Bob Forcha