https://doc.turris.cz/doc/en/howto/lxc
Wizard:
lxc-create -t download -n debianproxy
Start and attach to the container:
lxc-start -n debianproxy
lxc-attach -n debianproxy
# passwd
# apt update && apt upgrade
# useradd -m -s /bin/bash edu
# passwd edu
# hostnamectl set-hostname debianproxy.minwi.lan
# apt install openssh-server