lxc mounts

Use the fstab in the container?!
Worked for me with NFS. But for NFS you have to modify some apparmor config. Soultion can be found in the forum.

I dropped the way because I got some headache with ACLs on my OMV NAS and my Webservers.
 
I'm testing now with SMB / CIFS and it seems to work well with /var/vmail folder since Dovecot does not use symlinks but not so well with /var/www folder since ISPconfig control panel does use symlinks.
symlink "/var/www/ispconfig" -> "/usr/local/ispconfig/interface/web" failed: Operation not supported