Provide the environment variable for the ONLYOFFICE interface language.

[rainkio]

I'm a new FileX user and have set up ONLYOFFICE for document previewing and editing. Currently, the interface is in English. I've read that we can specify a language when calling the ONLYOFFICE editor, and that ONLYOFFICE supports multiple languages.
An environment variable can be configured and passed to ONLYOFFICE.Having multi-language support would be incredibly helpful.

[brkfun]

i'm looking into this one. I got what you said. It will be done in the next release

[brkfun]

Shipped in 0.54.0. The ONLYOFFICE editor now opens in the language of each person's account (else FILEX_DEFAULT_LOCALE), language-pack languages included as long as ONLYOFFICE has them, with the matching regional formats for spreadsheets.

To use one language for everybody, pick it under Admin → External services → ONLYOFFICE → Editor language, or set it in the environment, e.g. FILEX_ONLYOFFICE_LANG=de (auto is the default).

Details: docs/ONLYOFFICE.md → The editor's language

Thanks for the suggestion!