Dark Theme Environment Variable for Docker in Unraid?

[Wuff-Bellmann]

Hey guys,

thanks for this great project!

I tried to set the Environment Variables in my Docker/Unraid. These Variables work properly:

• site_domain=lingva.ml
• default_source_lang=auto
• default_target_lang=en --> de

But I can't get the dark theme one to work. How to get the dark theme variable working?