Actually NSS is deprecated and you should look at one of the newer open source implementations of solid:
- CSS (CommunitySolidServer): https://github.com/CommunitySolidServer/CommunitySolidServer (recommended, most used open source implementation currently) - JS/TS
- Manas: https://github.com/manomayam/manas - Rust
- ActivityPods: https://github.com/assemblee-virtuelle/activitypods - JS
The latter is lesser known, yet my favorite, under rapid development and has support for ActivityPub as well.
The Solid community runs hackathons quite regularly. Two submissions (https://solidhack.org/hall-of-fame/march2024.html) to the recent hackathon used CSS and included script to deploy a preconfigured CSS for testing (I'd suggest taking a look at Plenary).
I am new to Cloudron, but I'll try to see how to get one of the above Solid Servers up and running. If there is any interest and would like to help, please reach out.