Wonder why everything is docker docker docker now?? lol

POSIX is a thing, and even targeting generic "linux" and gnu libc is possible, but you'd be surprised how limited it is. Basically no cryptography is available because that's specific to a CPUs ALU (or more specific stuff like floating point units and stuff) which is required for everything. So yeah, if Linux locked their support like Windows does it could work better, but then it wouldn't be called Linux anymore XD