It's somewhat common to deploy services like loki off the web root (i.e. infra.corp.io/loki) when used with auth proxies. I'm currently unable to find a configuration for doing so.

Prometheus offers the following config:

--web.external-url=https://infra.corp.io/prometheus/

Looking at the webworks server config I don't see support already baked in for that either. Do you know if that's true? Would this be accepted into loki? I'll try and submit a patch.