Agree. I'm working through the rubber docker lab now. The fact that docker (a) handles all the details of cgroups, overlays, namespaces; (b) is super easy to

Agree. I'm working through the rubber docker lab now. The fact that docker (a) handles all the details of cgroups, overlays, namespaces; (b) is super easy to use; and (c) runs cross-platform is impressive.