Set the default language

By default, OpenCloud uses English (en) as its interface language, unless a different language is explicitly configured. OpenCloud relies on ISO 639-1 language codes for language selection. You can find the complete list of supported languages here: Supported languages

Edit the .env File

Open the environment configuration file located in your opencloud-compose directory:

nano opencloud-compose/.env

Configure the default language using the following environment variable:

# The default language used by services and the WebUI.
# Uses ISO 639-1 language codes (e.g. "en", "de", "fr").
# Defaults to English if not set.
DEFAULT_LANGUAGE="language code"

Restart Docker Services

After saving the file, shut down and restart the Docker containers to apply the changes:

docker compose down
docker compose up -d

Result

OpenCloud is now fully displayed in the language configured in the .env file.