docker

docker-compose

curl -L https://github.com/docker/compose/releases/download/1.1.0/docker-
compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

Installation: Commandline completion

curl -L
https://raw.githubusercontent.com/docker/compose/1.1.0/contrib/completion/bash
/docker-compose > /etc/bash_completion.d/docker-compose

Delete all untagged images

docker image rm $(docker images -a | grep "^<none>" | awk '{print $3}')