Just playing with this in a VM with an attached btrfs volume, a complete revelation. 96 lines! And it's actually pretty functional. This takes keeping it simple to a whole new level.<p>The Wheezy image I use with LXC worked well enough, the minimal alpine image not so well, apk complaining about its database.<p>User name spaces support would be nice, then we can play with unprivileged containers.<p>And Overlayfs would be a nifty alternative to btrfs, it's in kernel 3.18, and 4.04 adds support for multiple lower layers. But this btrfs implementation is cool too. Cgroups support will be somewhere on that list too.<p>Cgroups and namespaces is in the kernel. General Linux ecosystem for networking, storage and distributed systems is already extensive. The possibilities are endless.<p>So now LXC, Docker, Rkt and Nspawn have Bocker for company.