MVC 4 Dependency Injection using Microsoft's ServiceProvider

DependencyInjectionConfig.cs

/// <summary>
/// Wires up everything needed for dependency injection in mvc controllers.
/// Ripped from SO: https://stackoverflow.com/a/68873916
/// </summary>
public class DependencyInjectionConfig
{
    public static void Configure(ControllerBuilder controllerBuilder)
    {
        var services = new ServiceCollection();

        services.AddTransient<HomeController>();
        services.AddSingleton<IHomeService, HomeService>();

        var provider = services.BuildServiceProvider(new ServiceProviderOptions
        {
            ValidateOnBuild = true,
            ValidateScopes = true
        });

        controllerBuilder.SetControllerFactory(new MsDiControllerFactory(provider));
    }
}

/// <summary>
/// Implementation of <see cref="DefaultControllerFactory"/> using Microsoft's <see cref="ServiceProvider"/>.
/// </summary>
public class MsDiControllerFactory : DefaultControllerFactory
{
    private readonly ServiceProvider _provider;

    public MsDiControllerFactory(ServiceProvider provider) => _provider = provider;

    protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
    {
        IServiceScope scope = _provider.CreateScope();

        HttpContext.Current.Items[typeof(IServiceScope)] = scope;

        return (IController)scope.ServiceProvider.GetRequiredService(controllerType);
    }

    public override void ReleaseController(IController controller)
    {
        base.ReleaseController(controller);

        var scope = HttpContext.Current.Items[typeof(IServiceScope)] as IServiceScope;

        scope?.Dispose();
    }
}