Add Podman configuration/documentation

[Cub0n]

Hello,

should we combine the documentation for RaspberryPi and (rootless) Podman to this Repo?
https://github.com/Cub0n/Grafana-Prometheus-cAdvisor

Greetings

[levesduzw]

Hi, I'm also looking into how to get dockprom running on some RHEL nodes (pretty common use-case I think, now that CentOS 7 is EOL soon).

I'm a bit out of the loop on podman, but I found a couple of options?

• no change in dockprom repo, except documentation - users should install docker-ce on RHEL (cons: no RedHat support for it, no rootless, etc.)
• no change in dockprom repo, except documentation - users should install podman-compose which "translates" docker-compose files for podman (fairly new tool?)
• translate docker-compose files to podman pod definition syntax (tools exist for this e.g. kompose.io) and add it as an alternative