Adds the Metabase service to the Docker Compose setup.
- Creates a compose.yaml and .env.example for Metabase.
- Adds Metabase to the list of deployed services in the Ansible configuration.
- Updates .gitignore
This is needed to be able to nicely host multiple services under a
single IPv4.
The reverse proxy also includes a configuration to pass requests for
acme challenge properly.
And lastly the reverse proxy is already configured for a stirling pdf,
which gets added once the DNS record for it is in place.
Also introduce a new group for hosts, for which this play should be run,
called Docker_Compose_Hosts.
Finally add cit-ansible-test and cit-docker-host to this group with an
empty project list initially.
