Please integrate Prometheus exporters

[Rudd-O]

You might find useful to add to the compose image the following:

https://github.com/jvstein/bitcoin-prometheus-exporter

That way we can monitor how bitcoind is doing.

Thanks.

[Rudd-O]

To be specific this is their compose file:

https://github.com/jvstein/bitcoin-prometheus-exporter/blob/master/docker-compose.yml