[Buildbot-devel] Dockerfile for Pyflakes demo example

[Daniel Mizyrycki]

Hi everybody,
I'd like to thank you for this amazing project. It is super useful for 
other projects and believe the python and other communities are a better 
place because of it.
Been playing and using buildbot in production, both at work and 
personal use. One common theme I hear a lot is that buildbot is really 
cool, but has a very steep introductory curve. Part of it could be 
significantly improved with an efficient way to create the initial 
environment, so our users can concentrate and play from the start with 
master.cfg.
I've just submitted a pull request to introduce such a tool. Hope you 
like it :)