That's what got me on the Docker kick. Old unsupported programs that are tightly coupled to a kernel version, a Windows thing, some combination of Java / JDK shenanigans, an old SoundBlaster DLL, "The Python Carnival", or, really, what-have-you. Honestly, every big ERP demo ever should be done via container, because - and I swear I am not making this up - I have sat in months-long meetings with dozens and dozens of staff, both mine and theirs, trying to get Big ERP X up and running on-prem under whatever weird-ass policies the customer has on all their environments.

Granted, a lot of THAT benefits from the fact that the container actually has to be a documented flavor of good solid *NIX, unlike the "Windows Image X" which is usually just a big "whatever" of old iron, management fad spoor, and seven different kinds of antivirus software. Hell, last time I did this, IT couldn't even find me any kind of description of what the "official" windows image actually was. So no fault of Windows there, it's just that, as the big bus everyone rides in, it gets all the goop from everyone wrenching on it.