Настройка для пользователя

Add the docker group if it doesn't already exist:

sudo groupadd docker

Add the connected user "${USER}" to the docker group. Change the user name to match your preferred user:

sudo gpasswd -a ${USER} docker

Restart the Docker daemon:

sudo service docker restart

If you are on Ubuntu 14.04-15.10* use docker.io instead:

sudo service docker.io restart

Удаление не нужных образов

docker rmi $(docker images | grep "<none>" | awk "{print \$3}")

docker ps --filter status=dead --filter status=exited -aq | xargs docker rm -v