Aspire .NET 9 how to set up prod setting for prod

Question

I am new to Aspire and I have a solution with a Blazor web app, a Minimal API and an Azure function.

In debug I have local.settings however for production I cannot work out what to do, since the Azure function is a container I cannot see to add env variables or any application settings.

What am I missing? How do I set up settings for production for an Azure function deployed as part of an Aspire solution?

Thanks