[Feature Request] Read whitelist/blacklist from environment dynamically

[dirtycajunrice]

The lists currently are read on init and static afterwards. If the whitelist is passed in as a secret reference in k8s it is able to be updated on the fly. This allows for secret updates without rotating the pod.

[thomseddon]

I like this 👍

[colonelpopcorn]

I like it too, but am not currently running a k8s cluster. Would something like this be on the roadmap for docker-swarm or docker via labels, as well?

EDIT: Also, would it work to have a per-service whitelist/blacklist? I want to be able to have admin-only services protected along-side non-admin services. Not sure if this is on the roadmap.