Add comments to docker/entrypoint.rb.
Add comments to docker/entrypoint.rb.

RaptorRCX/exercism.io,nathanbwright/exercism.io,nathanbwright/exercism.io,jtigger/exercism.io,RaptorRCX/exercism.io,nathanbwright/exercism.io,treiff/exercism.io,tejasbubane/exercism.io,treiff/exercism.io,tejasbubane/exercism.io,IanDCarroll/exercism.io,jtigger/exercism.io,jtigger/exercism.io,treiff/exercism.io,mhelmetag/exercism.io,mhelmetag/exercism.io,tejasbubane/exercism.io,RaptorRCX/exercism.io,treiff/exercism.io,IanDCarroll/exercism.io,IanDCarroll/exercism.io,IanDCarroll/exercism.io,RaptorRCX/exercism.io,jtigger/exercism.io,mhelmetag/exercism.io,mhelmetag/exercism.io,tejasbubane/exercism.io,nathanbwright/exercism.io