[mvip]

I would look at Balena if you are already using Raspberry Pi’s and docker. Alternatively maybe look into ROAC but don’t know if it supports docker. The SD cards will be your biggest failure point, so select them wisely.

I’ve deployed Ubuntu Core at scale. It’s great but does have its learning curve. Theirs is also somewhat of a lock in, even if you can run everting yourself. However, their security is really good.