Dockerfile

This pull request import a Dockerfile which allows you to use Docker (http://docker.com) in order to run/deploy SprintApp.

How to use it:

    $ cd /path/to/SprintApp
    $ docker build -t macfanatic/sprintapp .
    $ docker run --rm --name sprintapp -p 80:3000 -t macfanatic/sprintapp

For non Linux users (Windows and Mac), you're using boot2docker so you need to know the IP address:
    $ boot2docker ip

Take the IP address and use it on your web browser and you should have SprintApp login screen.


TODO: Allow to mount a volume of the database data so that you're not going loose your data when restarting the docker container.