Docker without sudo, network issues
If you want to run docker
without using sudo, you can add yourself to the docker
group.
sudo usermod -aG docker <user>
In my case (Archlinux), this was not quite enough. Starting a container would work but
without internet access. The main problem was that I was not part of the network
groop.
sudo usermod -aG network <user>
Then things went smoothly.