This guide worked great and I'm running several dockers through my new (Mullvad) VPN tunnel network. One thing though... I have run the Plex docker through this network and two undesirable things happen:
1. No longer have access to the webui
2. when playing plex on my home TV (which is connected to my home/network wifi) it now streams at non-original quality, saying 'A direct connection to the server is not available"
Any advice on either of these issues much appreciated!