FreeBSD jails are light, effective, fast, and detailed chroots... not bloated VM / HW / Hyper or emulation instances that eat RAM and CPU.
sort out a bare minimum jail for a Tor node.
minimum = static tor (1 file) + devfs (kernel managed fs)
company kept getting their site hacked, so he had a cron job
Disposable instances of legacy dependencies, many do that ;)