Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using Autofac.Extensions.DependencyInjection;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using WeatherApiTest.Configuration;

namespace WeatherApiTest {
  public class Program {
    public static void Main(string[] args) {
      CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
      Host.CreateDefaultBuilder(args)
        .ConfigureAppConfiguration((hostBuilderContext, configurationBuilder) => {
          configurationBuilder.AddJsonFile("appsettings.json", false, true);
          configurationBuilder.AddUserSecrets(Assembly.GetExecutingAssembly());
        })
        .UseServiceProviderFactory(new AutofacServiceProviderFactory())
        .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); });
  }
}