Docker Set Container name to Instance ID

Since docker 0.7 is it possible to give container a name. The docker driver should make use of this feature and set the uuid of the nova instance as container name. That allows an easy lookup of containers. It also enables the administrator to find for a nova instance the corresponding container in the docker list (docker ps).

I would also propose to prefix the name in order to make it easy to filter out container created by nova. For example:

nova-d7553842-2424-4471-98a7-92a1db70033b