Truenas - Update/upgrade MineOS?

Hi all,

I have MineOS working as FreeBSD Jail under TrueNAS-12.0-U4.1 (FreeBSD 12.2-RELEASE-p6 df578562304(HEAD) TRUENAS).

I’m searching how to update/upgrade MineOS and the Web-UI. I don’t find the path as, for example, “/usr/games/minecraft”. There is no “apt update” available on FreeBSD I suppose.

Could someone help me to teach me how to have my server up to date ? It will perhaps help other users.

With many thanks for Help.
Best Regards