this script basically reboots a node once a week on thursday morning at a random time between 3h15 and 6h AM.
Create a file modules with the following content in your ./gluon/site/
directory and add these lines:
GLUON_SITE_FEEDS="community"
PACKAGES_EULENFUNK_REPO=https://github.com/freifunk-gluon/community-packages.git
PACKAGES_EULENFUNK_COMMIT=*/missing/*
PACKAGES_EULENFUNK_BRANCH=v2018.1.x
Now you can add the package ffac-weeklyreboot to your site.mk
(*/missing/* has to be replaced by the github-commit-ID of the version you
want to use, you have to pick it manually.)