To deploy a docker container to a Windows host you first need to install a Linux virtual machine (via WSL which is using Hyper-V under the hood).

It's basically the same process for FreeBSD (minus the optimizations), right?

Containers still need to match the host OS/architecture they are just sandboxed and layer in their own dependencies separate from the host.

But yeah you can't run them directly. Same for Windows except I guess there are actual windows docker containers that don't require WSL but if people actually use those it'd be news to me.