Choose specific app versions/docker image during installation or update

Feature Requests
1

Problem/Justification
TrueNAS Scale lacks the option to choose specific app versions during installation. This limits flexibility, especially when new updates cause issues, like bugs or incompatibilities. Users can’t revert to a stable version easily.

Impact
Allowing version selection would improve control, reliability, and reduce risks from faulty or unwanted updates.

User Story
For example, Transmission 4.0.6 is banned from some trackers, so I should be able to easily install a previous version (e.g., 4.0.5) to continue using the app without disruption.

2

i may add another example : frigate made change that when upgrading from 1.3 to 1.4, you are not able to see old recorded video.
The best way to keep access to old video is to get an old version still available.

I understand that it could lead to error due to options that are available in truenas apps and were not available in the old docker version, but its something that should be doable. ( or even, revert to a previous truenas apps version )

Thank you !