How to implement transformations in ASP NET Core?

Question

ASP.NET

It is necessary to configure the transformation for the
appsettings.json
launchSettings.json files

and the
Dev1
Dev2
Dev3
Test
Prod configuration

So that when the appropriate configuration is selected, the corresponding transformation occurs and the required application launch port and database are set

Answer 1

No transformation is needed.
Just start appsetting.*.json, where instead of * is the name of the profile.
And in launchessettings you set the appropriate DOTNET_ENVIRONMENT.
On startup, the base appsettings.json + appsettings.*.json will be selected
Here are more details about this mechanism:
https://blog.elmah.io/config-transformations-in-as...