Fix/ Update Resources for Running RITA with Docker

[Zalgo2462]

As seen in #729, Go will no longer prioritize the DNS link provided by Docker over the /hosts file generated inside the container by Docker. This means that we can no longer link the database container to the RITA container using the name localhost. As a result, we can no longer use the stock RITA config file when running RITA with Docker. The ConnectionString needs to be set to db_1 or rita_db_1 rather than localhost.

We should set a name for the db container in the docker-compose file. Additionally, we should upload a ready-to-go configuration file for running RITA with docker. Finally, we should update the documentation to make it easier to run RITA under Docker.