This repository is the source of automated Docker images builds to have some sort of "Official" FreeBSD images.
To start using this images you can execute:
docker pull linpct/freebsd
And this will get you latest version.
If you want a specific version you can use a tag, for example:
docker pull linpct/freebsd:12.1-RELEASE
For more information visit https://hub.docker.com/r/linpct/freebsd/
Thanks for checking this out!