Preach, brother! At a previous company we use zfs snapshots to do with Solaris containers what we now do with docker. We had push-button revertible containers

Preach, brother! At a previous company we use zfs snapshots to do with Solaris containers what we now do with docker. We had push-button revertible containers(zones) for developers to muck around and test with circa 2009 and we could send them around do different pieces of hardware with `zfs send`. It tied in very nicely with our continuous integration, too.