AbstractProgram.cs

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

namespace Coscine.ApiCommons
{
    public abstract class AbstractProgram<T> where T : IConfiguration, new()
    {
        public static IConfiguration Configuration = new T();

        public static void InitializeWebService<ST>() where ST : AbstractStartup, new()
        {
            var configurator = new Configurator(Configuration);
            configurator.Register();

            ST startup = new ST();
            startup.SetBasePath(configurator.ApplicationInformation);

            var host = new WebHostBuilder()

            .ConfigureServices(services =>
            {
                services.AddSingleton(startup);
            })
            .UseKestrel()
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseUrls($"http://[::]:{configurator.ApplicationInformation.Port}")
            .UseStartup<ST>()
            .Build();

            host.Run();
        }
    }
}