Using Docker as non-root
[UPDATE 2020-04-21] as mentioned in this post it’s not needed anymore:
Good news: the new docker (version 19.03 (currently experimental)) will be able to run rootless negating the problems that can occur using a root user. No more messing with elevated permissions, root and anything that might open up your machine when you did not want to.
Normally you need to run docker as root:
sudo docker run hello-world
If this is going on your nerves, you can add your normal user to the docker-usergroup.
But before you do this, read the warning in this post (where i also got the code from)
sudo groupadd docker sudo gpasswd -a $USER docker
logout / logout from your computer and run:
docker run hello-world
It should work now!
If you got something like
docker run hello-world WARNING: Error loading config file: /home/YOURUSERNAME/.docker/config.json - stat /home/YOURUSERNAME/.docker/config.json: permission denied
This can be fixed by typing in this post
sudo chown "$USER":"$USER" /home/"$USER"/.docker -R sudo chmod g+rwx "/home/$USER/.docker" -R