Two use cases:
- During mailserver deployment, @Sandlayth and me had to su from ops@ account, to start the lxc container
- I would like to $SSH $LXC_SERVER $LXC_EXEC $CONTAINER_NAME $LXC_COMMAND from my server, and lxc-attach requires root.
This is mainly for lxc, as docker allows unprivileged users in docker group to contact the API, but we can still add /bin/docker to the list.