Service discovery metrics with custom auth are just not possible?

[fede843]

Hello, I am trying to get working some metrics scrapping using docker service discovery.
In particular I have node exporter with basic auth, so its /metrics endpoint is behind this. Node exporter runs as a docker container and my plan is to configure it to get the metrics via service discovery, but I am not finding a way to tell Prometheus to use the proper user/pass. I can change the address, port and path dinamycally using labels, but not auth? Am I missing something here?
Thanks in advance.