$ sudo hostnamectl set-hostname 'new-hostname'
$ adduser username
$ usermod -aG sudo username
$ docker.help
On Ubuntu classic, before installing the docker snap,
please run the following command to add the login user into docker group.
sudo addgroup --system docker
sudo adduser $USER docker
newgrp docker
$ sudo snap install docker
unifi controller https://github.com/ryansch/docker-unifi-rpi