Umbraco IOC Implementation that works properly

UmbracoApplication.cs

using Autofac;
using Autofac.Integration.Mvc;
using Autofac.Integration.WebApi;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Optimization;
using MyApp.Services;
using MyApp.Services.Interfaces;
using Umbraco.Core;
using Umbraco.Core.Persistence.UnitOfWork;
using Umbraco.Core.Services;

namespace UkReview
{
    public class UmbracoApplication : IApplicationEventHandler
    {
        public void OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            BundleConfig.RegisterBundles(BundleTable.Bundles);
            var builder = new ContainerBuilder();
            
            // Register our controllers from this assembly with Autofac
            builder.RegisterControllers(typeof(UmbracoApplication).Assembly);
            // Register controllers from the Umbraco assemblies with Autofac
            builder.RegisterControllers(typeof(Umbraco.Web.UmbracoApplication).Assembly);
            builder.RegisterApiControllers(typeof(Umbraco.Web.UmbracoApplication).Assembly);
            // Register the types we need to resolve with Autofac
            builder.RegisterInstance(applicationContext.Services.ContentService).As<IContentService>();
            builder.RegisterType<MyContentService>().As<IMyContentService>();

            // Set up MVC to use Autofac as a dependency resolver
            var container = builder.Build();
            System.Web.Mvc.DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
        }

        public void OnApplicationInitialized(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
        }

        public void OnApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
        }
    }
}