Support deployment of containers to App Service

[pamelafox]

I'd like to use AZD to deploy to Azure App Service BYOC, as shown in this article: https://foldr.uk/azure-bicep-app-service-custom-container

Should it be possible? It requires passing the image URL as the runtime version of the App Service app.

I've started down the path of creating a template, but want to check here before I bang my head against a wall too much.