That's probably a heck of a lot more difficult than just running a s390x container via QEMU user mode emulation. Even regardless of difficulty, building and ru

That's probably a heck of a lot more difficult than just running a s390x container via QEMU user mode emulation. Even regardless of difficulty, building and running on real hardware is desirable to make sure that you've actually got a correct build going. Emulators can have bugs, including bugs that might give you a false positive about working builds when it really isn't.