Program.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using System.Collections.Generic;
using System.IO;
using System.Linq;

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

        public static IHostBuilder CreateHostBuilder(string[] args)
        {
            string localIpAddr = Core.Ops.Extensions.GetLocalIPAddress();
            IList<string> hosts = new List<string>
            {
                $"http://localhost:81",
                $"http://{localIpAddr}:81"
            };
            return Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                    webBuilder.UseKestrel();
                    webBuilder.UseContentRoot(Directory.GetCurrentDirectory());
                    webBuilder.UseIISIntegration();
                    webBuilder.UseIIS();
                    webBuilder.UseUrls(hosts.ToArray());
                });
        }
    }
}