Startup for my first ASP .NET Core 1.0

gistfile1.txt

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Security.Models;
using OpenIddict;

namespace Security
{
    public class Startup
    {

        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .AddJsonFile("appsettings.json");
                //.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true);

            //if (env.IsDevelopment())
            //{
            //    builder.AddUserSecrets();
            //}

            builder.AddEnvironmentVariables();

            Configuration = builder.Build();
        }

        public IConfiguration Configuration { get; set; }

        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddSingleton(provider => Configuration);

            services.AddCors();

            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration["Data:DefaultConnection:ConnectionString"]));

            services.AddIdentity<ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            services.AddOpenIddict<ApplicationUser, ApplicationDbContext>()
                .DisableHttpsRequirement();

            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole();
            loggerFactory.AddDebug();
            
            app.UseCors(builder =>
                builder.AllowAnyHeader()
                    .AllowAnyMethod()
                    .AllowAnyOrigin()
                );

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }

            app.UseFileServer();

            app.UseIdentity();

            app.UseOpenIddict();
            
            app.UseMvcWithDefaultRoute();

            //app.Run(async (context) =>
            //{
            //    await context.Response.WriteAsync("Hello World!");
            //});
        }
    }
}