Just like BDSX (Add support for BDSX!), LiteLoader can't be added because it is missing proper Linux support.
The Docker image they provide seems to run their Windows version through Wine (a software that allows running Windows programs on Linux), but that generally is not a good solution and insufficient for production use.
(Die Antwort ist auf Englisch, damit andere Leute die den Thread finden das auch verstehen können.)
is it bad if Aternos use Windows?