I am publishing an image service from ArcGIS Pro to a standalone ArcGIS server with Image Server. Per the workflow in the ESRI guidance "Publish an image service", the following is outlined.

However, when I select Publish > Image Service, I do not have the option to select a "Map" from the project only rasters. Am I missing something simple?

However, if I select to publish a Map Service, I can then select the map from the project and publish a Map service.