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.