docker rmi opnfv.org/ubuntu-builder:14.04 &>/dev/null || exit 0
docker rmi opnfv.org/ubuntu-builder:latest &>/dev/null || exit 0
docker rmi ubuntu:14.04 &>/dev/null || exit 0
docker rmi opnfv.org/ubuntu-builder:14.04 &>/dev/null || exit 0
docker rmi opnfv.org/ubuntu-builder:latest &>/dev/null || exit 0
docker rmi ubuntu:14.04 &>/dev/null || exit 0