Docker Tips

How to remove untagged images?

docker rmi $(docker images --filter "dangling=true" -q --no-trunc)

Read more:

• http://stackoverflow.com/questions/32723111/how-to-remove-old-and-unused-docker-images

How to use Docker without sudo?

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

Read more:

• http://askubuntu.com/questions/477551/how-can-i-use-docker-without-sudo

How to run DockerHub on start?

• See the systemd config