[Bug fix/solution] RAM usage keeps increasing until 100% on Unraid

I don't have the rights to reply to bug reports created by other users, so I'm providing the solution here.

This is related to bug report #7289 and probably some forum questions I didn't investigate but that were mentioned in the same bug report: https://forum.duplicati.com/t/release-2-4-0-0-stable-2026-09-03/22653

PROBLEM: Server RAM fills up until the system becomes sluggish when using the linuxserver.io Docker image of Duplicati 2.4.0.0 on Unraid OS.

SOLUTION: Map the internal Duplicati container folder (/run/duplicati-temp/) to persistent storage (preferably a cache disk). Otherwise, it will use RAM to temporarily store newly created and downloaded volumes.

Please see a screenshot below. Hope this helps!