Add node/container monitoring so we know when we need to scale

[JasonLovesDoggo]

Ideally via prometheus (container metrics) ,Grafana (visualization) & Node exporter (machine metrics)

https://github.com/vegasbrianc/prometheus gives a good place to work off of.

https://medium.com/@inderjotsingh141/set-up-monitoring-and-logging-in-a-docker-swarm-cluster-7fce37b78cf7 < slightly closer to our needs (replace traefik with nginx or reverse proxy to it

see https://discord.com/channels/379366830751481866/1140810276313243668/1311176827657785374