Configuration is applied in layers. If you’re using the default setup you get the following layers applied in this order:
1. appsettings.json
2. appsettings.{env}.json
3. user secrets (only in Development environment)
4. environment variables
5. command line args
You can full customize the setup if you desire, there are packages to support things like external secret stores. If you Google ‘Asp.Net core configuration” there’s a MS page that goes into great detail on all of this.
Anyway, your env vars must match the name as you’d structure it in a json object, but with the periods replace with double underscores. So ConnectionStrings.MyConnection becomes CONNECTIONSTRINGS__MYCONNECTION, FeatureFlags.Product.EnableNewIdFormat becomes FEATUREFLAGS__PRODUCT__ENABLENEWIDFORMAT, etc.
1. appsettings.json
2. appsettings.{env}.json
3. user secrets (only in Development environment)
4. environment variables
5. command line args
You can full customize the setup if you desire, there are packages to support things like external secret stores. If you Google ‘Asp.Net core configuration” there’s a MS page that goes into great detail on all of this.
Anyway, your env vars must match the name as you’d structure it in a json object, but with the periods replace with double underscores. So ConnectionStrings.MyConnection becomes CONNECTIONSTRINGS__MYCONNECTION, FeatureFlags.Product.EnableNewIdFormat becomes FEATUREFLAGS__PRODUCT__ENABLENEWIDFORMAT, etc.