I have a PlexConnect docker working fine in unRAID 6.0 beta 12 except I need to be able to edit the Settings.cfg file to add my Unotelly VPN DNS in place of the Google DNS. Docker is read only so anyone in my situation have a workaround or a way of achieving this?
I have no idea about Docker, but given you had to add the Plexconnect files in the first place, you should be able to create the settings.cfg file with all your required settings and then Plexconnect will just use this file when it starts.
Also you might want to consider looking into similar for the ATVSettings.cfg file as this holds the settings specific to the ATV(s)