That’s because linuxserver focuses on creating docker images for existing projects.

Usually if you check a product on linuxserver.io is because you know already the product and you want to find a good quality docker (docker compose) image.

All the github and docker pages from linuxserver have the same structure and after the generic intro they present the project.

Personally I love what they’re doing but I understand your confusion, it was the same for me when I first knew of the project.

It’s explained in the FAQ: https://www.beeper.com/faq#how-can-i-self-host-beeper I’ve not used the app so I don’t know how practical/easy it is but they’re at least offering the option, which is laudable.

For what I understood the decryption/encryption process happens on the bridge. The bridge is the selfhosted component so the transformation would happen in your server and they would have no visibility over the unencrypted message.

With Armbian installed, you can offload services that require to be always active on the box and create an “on-off” schedule for the homelab. This will save quite some electricity usage especially if your homelab is beefy