SlowCheetah and Secrets file?

[Slugsie]

So I have my project set up to correctly read API keys and Connection strings from a secrets file using the Microsoft.Configuration.ConfigurationBuilders.UserSecretsConfigBuilder. I'm also using Slow-Cheetah to do some transformations on the App.config between my Release and Debug builds.

But I need to use a different Connection string for my Release build than my Debug build. How do I get SlowCheetah and the UserSecretsConfigBuilder to work together to get the correct connection string depending upon my build config?