private static Container defaultContainer()
{
            return new Container(ioc =>
            {
                //....
cfg.For<IDependencyResolver>().Singleton().Add<StructureMapDependencyResolver>();
            });
}

GlobalHost.DependencyResolver = ObjectFactory.GetInstance<IDependencyResolver>();

static void InitStructureMap()
{
            ObjectFactory.Initialize(x =>
            {
                x.For<IUnitOfWork>().HybridHttpOrThreadLocalScoped().Use<MyContext>();
                x.Scan(scan =>
                {
                    scan.AssemblyContainingType<INewsService>();
                    scan.WithDefaultConventions();
                });
                
            });

            ControllerBuilder.Current.SetControllerFactory(new StructureMapControllerFactory());
            var container = ObjectFactory.Container;
            GlobalConfiguration.Configuration.Services
                .Replace(typeof(IHttpControllerActivator),
                new StructureMapHttpControllerActivator(container));
            
}