Docker example doesn't work with recent docker versions

[ulope]

The supplied docker configuration doesn't work with recent docker versions (> 1.9). This is mainly caused by the changes docker made to the networking infrastructure, esp. that /etc/hosts inside the containers no longer contains all other running container's IP addresses.

We need to come up with an alternative way to configure our setup. Possibly using something like https://github.com/tonistiigi/dnsdock