The default Flask application uses a LocalConfig that looks for the metadata and search services running on localhost. In order to use different end point, you need to create a custom config class suitable for your use case. Once the config class has been created, it can be referenced via the environment variable: FRONTEND_SVC_CONFIG_MODULE_CLASS
For more information on how the configuration is being loaded and used, please reference the official Flask documentation.
Certain features of the React application import variables from an AppConfig object. The configuration can be customized by modifying config-custom.ts.
Fonts and css variables can be customized by modifying fonts-custom.scss and variables-custom.scss.