[duped]

The way container runtimes on Linux work is fundamentally different to MacOS and Windows. You need virtualization (albeit, lighter weight since they can use the host kernel) to run containers on Windows and MacOS.

QEMU is kind of overkill because MacOS provides the VzVirtualMachine API through the Virtualization Framework, which can initialize a VM with the host's kernel. On Windows you can use Hyper-V, which is iirc how docker on Windows gets this done.

If MacOS and Windows had pid/mount/network namespaces, overlayfs, and allowed for unrestricted chroot (MacOS requires disabling SIP for that) then you could do the same thing on all platforms. Today, you need virtualization.