Helps, because the process is very easy on Ubuntu, snapcraft already has pre-compiled package you need to launch your containers. And Ubuntu18.04 already comes with LXD installed 
In case of Centos you really need to compile your own LXD server I did it before because I was using Scientific Linux (Distro of RedHat) and I wanted to create a container of that Linux … so I had to do it manually.
It’s notthing hard but Ubuntu is much more cheaper. working with LXD it’s like having a cloud in house.
here is my containers running at moment:
+--------+---------+----------------------+------+------------+-----------+ | NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS | +--------+---------+----------------------+------+------------+-----------+ | cuda10 | RUNNING | 192.168.1.149 (eth0) | | PERSISTENT | | +--------+---------+----------------------+------+------------+-----------+ | fastai | RUNNING | 192.168.1.141 (eth0) | | PERSISTENT | | +--------+---------+----------------------+------+------------+-----------+ | sl75 | STOPPED | | | PERSISTENT | | +--------+---------+----------------------+------+------------+-----------+
Also this LXD approach , you don’t need even install driver on the Container, because the LXD using another nvidia library by pass that information to the container.