Been chasing the rabbit down the hole on this exact same issue for an hour, only to find this thread. It looks like I’m dead in the water, too. Plex is essentially useless in my docker instance. Is there an intermediate workaround?
I’m on Version 1.13.8.5395, both the linuxserver.io docker image and the plex docker both pull this version down automatically 
EDIT: looks like I can specify 1.13.2.5154 in my compose file so it only grabs that version.
