Docker IIS Container: Ensure the container is running and accessible locally at http://192.168.10.1:250.

Public IP & Domain: The domain (testvault.info) is pointed to your server's public IP (31.56.#.#).

IIS with ARR Installed: ARR (Application Request Routing) must be installed on the IIS instance running on the host server.

For the configuration of ARR you can help you with this documentation : https://learn.microsoft.com/fr-fr/iis/extensions/planning-for-arr/using-the-application-request-routing-module