docker run --privileged=true --net host -v /var/lib/deis/store:/var/lib/deis/store -it busybox
here host /var/lib/deis/store and container /var/lib/deis/store are same docker makes things easy
in reality container /var/lib/deis/store is some random directory() on the host which docker creates and does
mount -bind /var/lib/deis/store <randdir>
but from inside container if we run mount -t ceph <ips>/: /var/lib/deis/store we are overriding the bind mount option
and /var/lib/deis/store of container is no longer related to /var/lib/deis/store of host.