* Expose port 80 for the christmas-community service
If the app is ran with docker-compose, the express server (port 80) should be open as well
* Change default ports to 3000 and 8080 for Express and DB respectively
Also modified the initial config to include a default DB port if not provided in the env
* Forward only port 80 and don't expose database by default in the config file
Database is still being exposed through the Dockerfile, as it already was
* Restore formatting for config/index.js
