Dockerize the application

[groovytron]

Useful links:

• Hints for dockerization
• docker-compose example
• yet another good example

An alternative is to use uwsgi and the application in the same container and configure uwsgi to serve static files.

Think about:

• A way to backup database (dumps) and store it on a volume.
• Use provide a YAML file containing the users and can put it on a volume so that users are created at the container start up. (see here for more info about django database backup)

[groovytron]

Done here: https://github.com/groovytron/maracker/commit/a60f9835ef64e115807c8ce60d1257644bbaf604