* docs: add headless Linux server guide
* docs: add ldd/appimage-extract tip for diagnosing missing libraries
Salvaged from #6817 before closing it as a duplicate.
Co-authored-by: Orca <help@stably.ai>
---------
Co-authored-by: Jinwoo-H <jinwoo@stably.ai>
Co-authored-by: Orca <help@stably.ai>