Docker ​

Install docker from the official repository

sudo pacman -Syu docker

sudo pacman -Syu docker

Start docker service ​

sudo systemctl enable docker
sudo systemctl start docker

sudo systemctl enable docker
sudo systemctl start docker

Allow non-root users to run docker ​

Replace USER with your username (piston in my case)

sudo usermod -a -G docker USER

sudo usermod -a -G docker USER

Then logout of the shell and login again to apply the changes

You should be able to run docker info without getting permission errors now.