Change example docker-compose deployment scripts:

 - accept unauthenticated connections on all networks so HAF apps
   deployed on the docker network can connect to the database
   (temporary workaround for development)
 - change the health check to use the http port, not the websocket port
 - add a `--skip-hived` flag to the docker entrypoint script which
   allows you to launch the container with only postgres running,
   but not start hived.