MOUNT FOLDER SHARED WITH THE HOST # data folder on the host machine /mnt/raiddisk/bookstack chown www-data:www-data bookstack # in lxc container configuration file /etc/pve/lxc/<lxc_id>.conf mp0: /mnt/raiddisk/bookstack,mp=/mnt/bookstack,replicate=0 lxc.idmap: u 0 100000 1 lxc.idmap: g 0 100000 1 lxc.idmap: u 1 33 1 lxc.idmap: g 1 33 1 lxc.idmap: u 2 100002 65533 lxc.idmap: g 2 100002 65533