Add warning regarding the domain name for docker install
Add warning regarding the domain name for docker install

Chocobozzz/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Chocobozzz/PeerTube,Chocobozzz/PeerTube