I use this. They’re very effective.

Theyre called MoCA adapters

This whole website reads like trash.

I always liked Mikrotik. Not the most open of router but the most documented and configurable I’ve seen with a web, gui, ssh, or telnet I’ve seen

This is a good idea, just be aware you’re going to pay a premium to power an old pc compared to an embedded system

Yes. I just feed it off the /60 my isp gives. Me and I just use my router to segregate the rest. Gotta love Mikrotik. It’s alot easier without dealing with NAT but the ip space calculations need a bit more though

Yes and usually sane developers allow you to specify external mysql instances.

Delving into the politics many view docker as a standalone system that shouldn’t need external items so they leave their db internal. Which goes against having configurations external.

But then you have external databases that you need to know enough to setup ahead of time to allow the docker to use and now I gave myself a headache