Resolve "plex failed to install"
Closes #741 (closed) Mostly just a one line addition to service.yml and then a bunch of words about config added to end of doc.md file. Tested said words on a reset deployment of plex.
Closes #741 (closed) Mostly just a one line addition to service.yml and then a bunch of words about config added to end of doc.md file. Tested said words on a reset deployment of plex.