Is your feature request related to a problem? Please describe. The API Catalog displays the URL of the service's homepage. This value is provided by the service. It usually uses the URL with the port of the service. It could be improved by using the APIML Gateway URL, but it is still not the best solution. The APIML could be run in HA and use a DVIPA address. Any service cannot know about this address. It is not the responsibility of a service but the APIML.
Describe the solution you'd like The API Catalog should update the homepage URL during the transformation of the service's data to use the external domain and routing through the Gateway.