ASP.Net Core 1.0 configuration per developer

Startup.cs

///NCONFIG_ALIAS is set in Azure as Environment variable
var configAlias = Environment.GetEnvironmentVariable("NCONFIG_ALIAS");
if(string.IsNullOrEmpty(configAlias)) //Use the computer name for default custom config
	configAlias = Environment.GetEnvironmentVariable("COMPUTERNAME");

// Set up configuration sources.
var builder = new ConfigurationBuilder()
	.SetBasePath(appEnv.ApplicationBasePath)
	.AddJsonFile("appsettings.json")
	.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true) //http://docs.asp.net/en/latest/fundamentals/environments.html
	.AddJsonFile(Path.Combine("Configuration", $"appsettings.{configAlias}.json"), optional: true)
	.AddEnvironmentVariables();