Steps:
lxc launch ubuntu:16.04 docker
apt update && apt install apt-transport-https ca-certificates gnupg-agent software-properties-common -y
curl -fsSL https://download.docker.com/linux/ubu... | apt-key add -
echo deb https://download.docker.com/linux/ubu... xenial stable to /etc/apt/sources.list.d/docker.list
apt install docker-ce docker-ce-cli containerd.io -y
Have fun !!!