public static int Main(string[] args)
{        
    // Configuration
        var configuration = new ConfigurationBuilder().AddJsonFile("appsettings.json").AddEnvironmentVariables().Build();

        // DI container
        var services = new ServiceCollection();
        ConfigureServices(services, configuration);
        var serviceProvider = services.BuildServiceProvider();

        // Do I pass along the serviceProvider?
        // Can resolve using locator pattern do I just use this in my classes?
        // var exampleRepository = _serviceProvider.GetService<IExampleRepository>();

          // Execute the correct command based on args
        return CommandLineOptions.Execute(args);

}

 private static void ConfigureServices(IServiceCollection services, IConfiguration configuration)
    {
        services.AddScoped<ApplicationDbContext>((s) => new ApplicationDbContext(configuration.GetSection("Data:DefaultConnection:ConnectionString").Value));
        services.AddScoped<IExampleRepository, ExampleRepository>();
    }

public static class CommandLineOptions
{        
    public static int Execute(string[] args, IServiceProvider serviceProvider)
    {
        try
        {
            var app = new CommandLineApplication
            {
                Name ="dnx abc",
                FullName ="Abc Commands",
                Description ="ABC",

            };

            app.VersionOption("--version", PlatformServices.Default.Application.ApplicationVersion);
            app.HelpOption("-?|-h|--help");

            app.OnExecute(() =>
                {
                    //ShowLogo();
                    app.ShowHelp();
                    return 2;
                });

            app.Command(
           "task",
            task=>
            {
                task.Name ="Task1";
                task.FullName ="Task1";
                task.Description ="Tasks";                    
                task.HelpOption("-?|-h|--help");
                task.OnExecute(() => { task.ShowHelp(); return 0; });

                task.Command(
                   "task1",
                    data =>
                    {
                        data.FullName ="Task1 command";
                        data.Description ="Task1";

                        data.OnExecute(() =>
                        {
                            // Need to inject
                            var p = new Task1();
                            p.Process()  

                            return 0;
                        });

public class Task1
{
    public Task1()
    {

    }

    private readonly IExampleRepository _exampleRepository;

    public Task1(IExampleRepository exampleRepository)
    {
        _exampleRepository = exampleRepository;
    }


    public void Process() {
      ....
    }

services.AddTransient<Task1>();
services.AddTransient<Func<Task1>>( (serviceProvider) => {
    return () => serviceProvider.GetService<Task1>();
});

public class MyTaskApplication
{
    private readonly Func<Task> taskFactory;
    public MyApplicationService(Func<Task> taskFactory)
    {
         this.taskFactory = taskFactory;
    }

    public void Run()
    {
        var task1 = taskFactory(); // one instance
        var task2 = taskFactory(); // another instance, because its registered as Transient
    }
}

public class TaskFactory : ITaskFactory
{
    private readonly IServiceProvider services;

    public TaskFactory(IServiceProvider services)
    {
         this.services = services;
    }

    public Task1 CreateNewTask()
    {
        // get default task service, which is transient as before
        // so you get a new instance per call
        return services.GetService<Task1>();
    }

    public Task1 CreateNewTask(string connectionString)
    {
         // i.e. when having multiple tenants and you want to
         // to the task on a database which is only determined at
         // runtime. connectionString is not know at compile time because
         // the user may choose which one he wants to process

         var dbContext = MyDbContext(connectionString);
         var repository = new ExampleRepository(dbContext);

         return new Task1(repository);
    }
}

public class MyTaskApplication
{
    private readonly ITaskFactory taskFactory;
    public MyApplicationService(ITaskFactory taskFactory)
    {
         this.taskFactory = taskFactory;
    }

    public void Run()
    {
        // Default instance with default connectionString from appsettings.json
        var task1 = taskFactory.CreateNewTask();

        // Tenant configuration you pass in as string
        var task2 = taskFactory.CreateNewTask(tenantConnectionString);
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        var services = new ServiceCollection();
        services.AddScoped<Task1>();
        services.AddScoped<MyTaskApplication>();
        services.AddTransient<ITaskFactory, TaskFactory>();
        var serviceProvider = services.BuildServiceProvider();

        var m = serviceProvider.GetService<MyTaskApplication>();
        m.Run();

    }
}

public class TaskFactory : ITaskFactory
{
    private readonly IServiceProvider services;

    public TaskFactory(IServiceProvider services)
    {
        this.services = services;
    }

    public Task1 CreateNewTask()
    {            
        // get default task service, which is transient as before
        // so you get a new instance per call
        return services.GetService<Task1>();
    }

    public Task1 CreateNewTask(string connectionString)
    {
        // i.e. when having multiple tenants and you want to
        // to the task on a database which is only determined at
        // runtime. connectionString is not know at compile time because
        // the user may choose which one he wants to process

        //var dbContext = MyDbContext(connectionString);
        //var repository = new ExampleRepository(dbContext);


        return new Task1(connectionString);
    }
}

public interface ITaskFactory
{
    Task1 CreateNewTask();

    Task1 CreateNewTask(string connectionString);
}

public class MyTaskApplication
{
    private readonly ITaskFactory taskFactory;
    private string tenantConnectionString;

    public MyTaskApplication(ITaskFactory taskFactory)
    {
        this.taskFactory = taskFactory;
    }

    public void Run()
    {
        // Default instance with default connectionString from appsettings.json
        var task1 = taskFactory.CreateNewTask();
        task1.Process();

        // Tenant configuration you pass in as string
        var task2 = taskFactory.CreateNewTask(tenantConnectionString);
        task2.Process();

        Console.WriteLine("Running");
    }
}

public class Task1
{
    private string _repositoryText;

    public Task1()
    {
        _repositoryText = String.Empty;  
    }

    public Task1(string repositoryText)
    {
        _repositoryText = repositoryText;
    }

    public void Process()
    {
        Console.WriteLine("process:" + _repositoryText);
    }
}