Give CoreOS rkt a try inside Docker.
As an executable.
sudo docker run --privileged -it --rm ozzyjohnson/rkt
Launch an ACI.
sudo docker run \
--privileged -it --rm \
docker-rkt run \
https://github.com/coreos/etcd/releases/download/v0.5.0-alpha.4/etcd-v0.5.0-alpha.4-linux-amd64.aci