My goal was to install plex on an Ubunut 18.04 container while using my Synology NAS and and NFS Share to host my Plex media. I had some trouble initially with bind mounting the share and also with user permissions to the subfolders but we figure it out.
##Helpful Commands
#Update everything first
apt-get update
apt-get upgrade
#Bind Mount
cd /etc/pve/lxc
mp0: SOURCE, mp=TARGET
mp0: /mnt/pve/synology/plex,mp=/mnt/synology/plex
#Install plex
wget https://downloads.plex.tv/plex-media-...
dpkg -i plexmediaserver*.deb
#Enable Startup
systemctl enable plexmediaserver.service
systemctl start plexmediaserver.service
#Apt Update automatically
dpkg -L plexmediaserver
nano /etc/apt/sources.list.d/plexmediaserver.list
wget -q https://downloads.plex.tv/plex-keys/P... -O - | sudo apt-key add –
apt-get install gnupg
apt update