Add startup to normally set-up a webhost

Program.cs

@@ -5,32 +5,13 @@ namespace OembedTests
     {
         public static void Main(string[] args)
         {
-            var builder = WebApplication.CreateBuilder(args);
-
-            // Add services to the container.
-
-            builder.Services.AddControllers();
-            // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
-            builder.Services.AddEndpointsApiExplorer();
-            builder.Services.AddSwaggerGen();
-
-            var app = builder.Build();
-
-            // Configure the HTTP request pipeline.
-            if (app.Environment.IsDevelopment())
-            {
-                app.UseSwagger();
-                app.UseSwaggerUI();
-            }
-
-            app.UseHttpsRedirection();
-
-            app.UseAuthorization();
-
-
-            app.MapControllers();
-
-            app.Run();
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(k =>
+                {
+                    k.ConfigureKestrel(l => l.ListenAnyIP(80));
+                    k.UseStartup<Startup>();
+                })
+                .Build().Run();           
         }
     }
 }