[Docs] Orb sensor gets uninstalled by UDM Pro (OS 5.1.19)

[RajibRashid]

Description

On latest versions of UnifiOS, a cronjob periodically checks for custom (third-party) packages and removes them. This results in loss of sensor data from the UDM

Page Information

• Page URL or path: https://orb.net/docs/setup-sensor/unifi-routers
• Section heading (if applicable):

Issue Type

• Missing information
• Incorrect information
• Confusing explanation
• Broken link
• Outdated information
• Formatting or visual issue
• Other

Suggested Improvement

In order to retain the orb package, the following entry needs to be added to /etc/default/ubnt-dpkg-cache:

DPKG_CACHE_UBNT_PKGS+=" orb"

In my setup, NextDNS client has a similar entry in that file and has successfully survived OS/firmware upgrades.

Additional Context

[svdgraaf]

Thanks @RajibRashid! I've created a PR with the changes (and some more):

#83