Startup.cs

using AspNetCore.NetCore.WebApp.Data;
using AspNetCore.NetCore.WebApp.Models;
using AspNetCore.NetCore.WebApp.Services;
using Autofac;
using Autofac.Extensions.DependencyInjection;
using AutoMapper;
using Dna.NetCore.Core.DAL.AutoMapper;
using Dna.NetCore.Core.DAL.EFCore;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System;

namespace AspNetCore.NetCore.WebApp
{
    public class Startup
    {
        public IContainer ApplicationContainer { get; private set; }
        public IConfigurationRoot Configuration { get; }

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

            if (env.IsDevelopment())
            {
                // For more details on using the user secret store see http://go.microsoft.com/fwlink/?LinkID=532709
                builder.AddUserSecrets();

                // This will push telemetry data through Application Insights pipeline faster, allowing you to view results immediately.
                builder.AddApplicationInsightsSettings(developerMode: true);
            }

            builder.AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        public IServiceProvider ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services.AddApplicationInsightsTelemetry(Configuration);

            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddDbContext<CoreEFContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

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

            services.AddMvc();

            //services.AddAutoMapper();
            services.AddAutoMapper(cfg =>
            {
                cfg.AddProfile<AutoMapperProfile_NetCore_DtoFromDao>();
                cfg.AddProfile<AutoMapperProfile_NetCore_SummariesFromDaos>();
            });

            // Add application services.
            services.AddTransient<IEmailSender, AuthMessageSender>();
            services.AddTransient<ISmsSender, AuthMessageSender>();

            // Autofac configuration
            return ConfigureAutofacContainer(services);
        }

        // 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(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseApplicationInsightsRequestTelemetry();

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
                app.UseBrowserLink();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseApplicationInsightsExceptionTelemetry();

            app.UseStaticFiles();

            app.UseIdentity();

            // Add external authentication middleware below. To configure them please see http://go.microsoft.com/fwlink/?LinkID=532715

            app.UseMvc(routes =>
            {
                routes.MapAreaRoute("administration_route", "Administration",
                    "Administration/API/{controller}/{action}/{id?}");
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
            // TODO: https://github.com/aspnet/Docs/blob/master/aspnet/data/ef-mvc/intro/samples/cu-final/Data/DbInitializer.cs
            // DbInitializer.Initialize(context);
        }

        private AutofacServiceProvider ConfigureAutofacContainer(IServiceCollection services)
        {
            // cref: http://docs.autofac.org/en/latest/integration/aspnetcore.html

            // Create the container builder.
            var builder = new ContainerBuilder();
            // Register dependencies, populate the services from
            // the collection, and build the container. If you want
            // to dispose of the container at the end of the app,
            // be sure to keep a reference to it as a property or field.
            //builder.RegisterType<MyType>().As<IMyType>();

            // Autofac Modules registrations
            builder.RegisterModule<AutofacModuleConfig>();

            builder.Populate(services);

            this.ApplicationContainer = builder.Build();

            // Create the IServiceProvider based on the container.
            return new AutofacServiceProvider(this.ApplicationContainer);
        }
    }
}