user namespaces will solve this. lxc in ubuntu 14.04 already supports docker in user lxc, ie. no root needed. add silly disclaimer.. yes docker has some notion

user namespaces will solve this. lxc in ubuntu 14.04 already supports docker in user lxc, ie. no root needed. add silly disclaimer.. yes docker has some notion of portable containers plugins, but it uses lxc atm, and the feature is in lxc upstream.