Rebuilding containers is trivial if they supply the dockerfile. Then the base image is up to date, and you can add any updates/patches for things like the recent react vuln.
Covid turned me into an ABRP (Anything But Raspberry Pi). They fucked us to make sure their business customers could get supply; they're on the list now.
Did you actually try to get to a Gerber from there? I've done this a few times with Kicad_sch and it just doesn't get to anything useful.
It'll tell you everything you want to hear, but try to use it to finish the job. I've tried to get it to just wire up a some simple MCU/sensor schematics to import and it's a mess.
I find Nextcloud Cookbook pretty great for just pulling the schemas.org recipe out of an URL. And it presents it nicely. One of the few apps I actually use in NC besides the file functions, I have hundreds of recipes in there.
idk about a 4b these days but the 5's are stupid priced. You can get a refurbed 6th gen intel machine with 16gb of ram and an SSD for the price of a 4Gb Pi 5. Add an ESP32 running ESPhome or Firmata and you've got everything you could do with a Pi and a lot more.
That looks like dogshit.