730 update docker resources

[kirkhauck]

Summary

Resolves bug preventing running RITA with Docker Compose. Created a ready-to-go configuration file for Docker named rita_docker.yaml, which is just a copy of rita.yaml but with "localhost" replaced with "db" in ConnectionString. Removed "links" key from rita service in docker-compose.yml since it is no longer needed. Pointed the Dockerfile to rita_docker.yaml instead of rita.yaml.

The usage guide was updated to new docker compose syntax and to assume user is not in the docker group and needs to use sudo.

Related Issue

closes #730

Testing

Pull down RITA image

sudo docker pull quay.io/activecm/rita

Setup your variables (default config path is ./etc/rita_docker.yaml)

export CONFIG=/path/to/your/rita/config.yaml
export LOGS=/path/to/your/zeek/logs

Test the configuration

sudo -E docker compose run --rm rita test-config

Import a dataset

sudo -E docker compose run --rm rita import /logs your-dataset

Test a command (e.g. show-beacons)

sudo -E docker compose run --rm rita show-beacons your-dataset

There should be no errors when executing these commands.

[Zalgo2462]

Tested well 👍