In Spring, for using different configs, you need to specify the active profile. And the application selects the respective file for selecting config. How to implement such a thing in Ktor? I have application.conf file, and set connectionString: ${CONNECTION_STRING} and in .env file I specified the value for the variable CONNECTION_STRING. But, application does not run saying Could not resolve substitution to a value: ${CONNECTION_STRING}.
application.conf is in resources folder.
.env is in root folder, beside src folder.