Console App with dependency injection

savaged.cli.ConsoleWithDI.App.cs

using Autofac;
using savaged.cli.io;
using savaged.cli.modules;

namespace savaged.cli
{
    /// <Summary>
    /// Usage in Program.cs 
    ///     App.Current.MainModule.Run();
    /// </Summary>
    public sealed class App
    {
        private static readonly App _instance = new App();
        private readonly ILifetimeScope _scope;

        private App()
        {
            _scope = Build().BeginLifetimeScope();
            MainModule = _scope.Resolve<MainModule>();
        }

        public static App Current => _instance;

        public IModule MainModule { get; }

        private IContainer Build()
        {
            var builder = new ContainerBuilder();
            // One might create a class to output to the console (for example)
            builder.RegisterType<COut>().As<ICOut>();
            builder.RegisterType<MainModule>();
            // There could be more modules
            return builder.Build();
        }

    }
}