dotcloud/docker — pull request #4184 by vbatts (2014-02-17 17:53:00+00:00)
Title: systemd-nspawn execdriver

Allowing the docker daemon to use alternate to lxc execdriver.
By starting as: EXEC_DRIVER=systemd docker -d
or setting the variable in /etc/default/docker

Docker-DCO-1.1-Signed-off-by: Vincent Batts (github: vbatts)