you might be looking to add security to your Proxmox department. well disabling the root user is a good place to start here is how we did it at VE

Linux Containers or LXCs are a large part of Proxmox and are a grate tool for running isolated lite wight jobs with Proxmox. This video is meant to show you just how easy it is to work with them.

this is a raw dump of commands used for this project intended for use with the video below

nano /etc/pve/lxc/100.conf

add line

features: nesting=1,keyctl=1

this can also be added in the options tab now

start ct and install docker

sudo apt-get update

sudo apt-get install apt-transport-https ca-certificates curl gnupg lsb-release

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

sudo apt-get install docker-ce docker-ce-cli containerd.io

test docker

docker run hello-world

Docker link

https://docs.docker.com/engine/install/ubuntu/