At enough time of this crafting, docker is unsupported on FreeBSD because it necessitates a bunch of linux-only modules. So, the only real solution to run it is actually in a virtual device. even so, in pursuit of https://macktechbiz.com/blogs/news/unleashing-the-power-of-micro-appliance-pc-firewalls-a-revolution-in-open-source-firewall-solutions-with-zenarmor-and-opnsense-support