Automated docker builds

[rolfwessels]

Hi,

Thanks for the awesome repo. I tried 2 other linux capable products and yours is by far the most complete.

I automated the docker building and packaging of simple-nuget-server

The repo is here: https://github.com/rolfwessels/docker-simple-nuget-server
Docker files are here: https://hub.docker.com/r/rolfwessels/docker-simple-nuget-server/

If you are happy to share some dockerhub and travis access (or I can show you how) I will be happy to create a PR that includes this automation into this repo.

Thanks again

Rolf