CRIU and docker checkpoint on Mac

Has anyone got CRIU and “docker checkpoint” working on the Mac? It seems the trick is you need to install CRIU on the host container. Theoretically, it shouldn’t care about the Mac hypervisor world since it’s all upwards looking into the Linux kernel. I did manage to get a shell on the Mac host linux-kit container, but there’s no longer an easy way to install new packages there. Looks like there was in previous versions (2017 GitHub - boucher/criu-for-mac: Add CRIU support to docker-for-mac.) but now that container/VM is pretty well locked down. Is it possible to replace it with a custom image, or get apk/apt working there?