asp.net-core Configuring multiple Environments Using ASPNETCORE_ENVIRONMENT from web.config
Example
If you do not want to use ASPNETCORE_ENVIRONMENT from environment variables and use it from web.config of your application then modify web.config like this-
<aspNetCore processPath=".\WebApplication.exe" arguments="" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false">
<environmentVariables>
<environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
</environmentVariables>
</aspNetCore>
