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get familiar with openvz - linux containers that allow to configure network interfaces, dynamic resources allocation, etc

Example from http://openvz.org/Basic_operations_in_OpenVZ_environment:

[host-node]# vzctl create 101 --ostemplate fedora-core-18-minimal [host-node]# vzctl set 101 --ipadd 10.1.2.3 --save [host-node]# vzctl set 101 --nameserver 10.0.2.1 --save [host-node]# vzctl start 101

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OpenVZ is basically identical to lxc, which is one of the underlying components of Docker.

Docker could be ported from lxc to openvz (and probably will be in the future as a plugin, as it has been requested).

That is to say, Docker is not a replacement for OpenVZ, or any other low-level container capability. It's simply a higher-level tool which is built on top.

Yes, LXC and OpenVZ in it's core similar technologies that enable linux containers. OpenVZ also comes with varios containers management tools, some of which are available via docker for LXC containers too.

We are very familiar with openvz, as dotcloud was based on it before switching to lxc :) See https://news.ycombinator.com/item?id=5817455

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