[ungzd]

It's interesting and very similar to Nix, but I still didn't figure out purpose of it, especially why it heavily uses Docker. Many people use Docker for the same functionality that Nix provides: bundling application with its dependencies, not for isolating groups of processes from each other.

[vesak]

Docker images is one of the supported formats when exporting packages. Others at the moment are aci, mesos and tarball.