Linux Containers
We will use lxd (LX Demon) and lxc (Linux Container) for creating and managing our Linux Containers
Installation
On arch linux
sudo pacman -S lxc lxd
Setup
First of all we need to enable lxd and lxc service
On systemd
sudo systemctl enable lxd.service lxd.socket lxc.service
Enable the control groups PAM module by modifying /etc/pam.d/system-login to additionally contain the following line:
session optional pam_cgfs.so -c freezer,memory,name=systemd,unified
Secondly, modify /etc/lxc/default.conf to contain the following lines:
lxc.idmap = u 0 100000 65536
lxc.idmap = g 0 100000 65536
Finally, create both /etc/subuid and /etc/subgid to contain the mapping to the containerized uid/gid pairs for each user who shall be able to run the containers. The example below is simply for the root user (and systemd system unit):
Add folling to /etc/subuid
root:100000:65536
Add following to /etc/subgid
root:100000:65536