I think you need to set the locale in your LXC container. You can find instructions on how to do this on a Debian system here. Choosing any UTF 8 locale should work. You probably want to set de_DE.UTF-8 as your default locale.
I think you need to set the locale in your LXC container. You can find instructions on how to do this on a Debian system here. Choosing any UTF 8 locale should work. You probably want to set de_DE.UTF-8 as your default locale.