updates docs

src/pages/concepts/configuration/index.mdx

@@ -15,6 +15,8 @@ The configuration file consists of several key sections, including:
 - **gitClients**: Contains the configuration for connecting to git providers.
 - **badges**: Defines the badges, their levels, checks, and associated thresholds.
 - **personalEmailDomains**: A list of personal email domains (required by the elephant and bus factor check).
+- **remoteConfigUrl**: URL to a remote configuration file (optional). Or `REMOTE_CONFIG_URL` environment variable.
+- **subsequentUseApiDomain**: The domain of the subsequent use API
 
 ### Git Clients Configuration
 
@@ -143,7 +145,7 @@ badges:
             description: Checks if a project is open source. This check is decided manually by the Open-Code team.
 ```
 
-In this case, the decisionJsonUrl points to a file (open-source.json) that contains the rules or decision criteria for determining if a project is open source. The file is hosted on a GitLab server, and the Badge API will access it at **start time**.
+In this case, the decisionJsonUrl points to a file (open-source.json) that contains the rules or decision criteria for determining if a project is open source. The file is hosted on a GitLab server, and the Badge API will refresh it every 5 minutes.
 
 The JSON file should have the following structure:
 
@@ -166,4 +168,12 @@ Example decision JSON file:
     "https://gitlab.opencode.de/open-code/badgebackend/.*"
   ]
 }
-```
\ No newline at end of file
+```
+
+
+### Remote Configuration
+
+The `remoteConfigUrl` parameter allows you to specify a URL to a remote configuration file. This file will be fetched and used to override the local configuration. Only the `badges` and `personalEmailDomains` sections are respected from the remote configuration file. To update other values, a local file needs to be used.
+
+The remote configuration file might contain the special string `<badge-config-repo>`. This value will be replaced with the `remoteConfigUrl` base path. This is useful to validate remote configuration from a different branch and pass the url via an environment variable.
+