docker without sudo

gistfile1.sh

# Add the docker group if it doesn't already exist.
sudo groupadd docker

# Add the connected user "${USERNAME}" to the docker group.
# Change the user name to match your preferred user.
# You may have to logout and log back in again for
# this to take effect.
sudo gpasswd -a ${USERNAME} docker

# Restart the docker daemon.
sudo service docker restart

Nice tip!

..thanks