Of course, and that's the value of the abstraction to me. Docker itself is obviously nothing to do with the Linux container technologies themselves that make up the equivalent functionality of FreeBSD jails, but I'm not aware of any equivalent abstraction that works around jails or zones even though it might be possible. So the way I see containers on Linux is not literally a composition of kernel features like cgroups or seccomp, but as an abstract thing that can be composed out of various primitives. And in practice, there's a number of different runtimes around it, including Docker clones like Podman, or tools that manage effectively chroots much closer to what you would do with jails.

That said, I could just be completely wrong, and there could be similar things that can be done using jails and zones. But when I looked around for similar art with FreeBSD jails, either with regards to Docker's style of packaging and distribution, or with regards to additional layers like gVisor, it didn't seem like a thing well-suited to that kind of composition. In comparison, jails, at least, seem kind of like more powerful chroots. To me this is a pretty big difference versus Linux "containers".