Zenject: Inject into monobehavior

I want to start using zenject in my project but I encountered an issue. From their tutorial in github page I was able to inject non monobehavior objects into each other like this.

public class MyInstaller : MonoInstaller {
     public override void InstallBindings() {
         Container.Bind<string>().FromInstance("Hello World!");
         Container.Bind<Greeter>().AsSingle().NonLazy();
         Container.Bind<BasicArmorDamageCalculator>().AsSingle().NonLazy();
     }
}

public class Greeter {

    public Greeter(String message) {
        Debug.Log("this was injected: " + message);
    }
}

But the problem is that I cannot inject objects to Monobehavior classes. Using this Installer I tried to inject Greeter to monobehavior class like this

[Zenject.Inject]
public void Construct(Greeter greeter) { 
    Debug.log(greeter);
}

And the greeter variable is null. As I understand I have to register my monobehavior class in the Installer class but It requires instantiating it while mono class is already on some game object.

What is the solution to this one?

Thanks in advance!