[Mailman-Developers] Docker files for mailman

[Stephen J. Turnbull]

Danil Smirnov writes:

 > Okay I've found that image can be built if you base on Ubuntu Trusty distro
 > (line 6 of the Dockerfile: "FROM ubuntu:trusty") and add ruby-sass to the
 > set of packages to install (line 13: "apt-get install -y git python3-dev
 > python3-pip python-dev python-pip python-virtualenv ruby-sass").

The absence of sass is a known problem with Debian-derived systems.

 > I'm not sure whether I need to change it in the Wiki...

Please do, but do mention that currently it seems to a problem only
for the Debian family of distributions.

Steve