It seems impossible to change the default language used on the login page

Describe the bug

When running pgAdmin4 in server mode, the login page is always in english

To Reproduce

Steps to reproduce the behavior:

1. Go to pgAdmin4
2. Labels read "Login" or "Forgotten your password"

Expected behavior

In my docker-compose.yml file, I tried setting the environment variable:

PGADMIN_DEFAULT_LANGUAGE=fr

I also tried adding to the "config_system.py" the following line:

DEFAULT_SERVER_LANGUAGE = 'fr'

I tried removing all the other languages, except french in the config_system.py file:

LANGUAGES = {
    'fr': 'French',
#    'en': 'English',
}

The list contains only one option, but the rest of the UI is still in English:

I use the latest "dpage/pgadmin4" docker image

Additional context

I think that once you are connected, the language of the UI can be changed, but I would like to change the language of the default landing page as well.

It seems that those strings are hardcoded in the source code:
https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/templates/security/login_user.html#L23

So it might be more of a feature request ?

Thanks,
Fabien

Start with web/pgadmin/templates/security/login_user.html at the referenced login labels, then inspect config_system.py and the existing language settings. Reproduce the server-mode login page with PGADMIN_DEFAULT_LANGUAGE=fr and confirm that the landing-page labels follow the configured language while the rest of the language behavior remains intact.