Kyoo/Kyoo/Program.cs

using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using System.IO;

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

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .ConfigureAppConfiguration((hostingContext, config) => 
                {
                    config.SetBasePath(Directory.GetCurrentDirectory());
                    config.AddJsonFile("config.json", false, true);
                })
                .UseStartup<Startup>();
    }
}