Question: I was unable to find resources to understand how Docker Hub images can be managed.

I have an image tagged with V0.0.1 and built a new one tagged V0.0.2. Now I want to remove the V0.0.1 image as the new version is built differently and I don't want users to pull the old image.

Answer: 
Currently you can't delete a image from hub via command line or web portal. There are open issues:

* **<https://github.com/docker/hub-feedback/issues/68>**
* <https://github.com/docker/hub-feedback/issues/250>
* <https://github.com/docker/docker/issues/8759>
* <https://github.com/docker/docker-registry/issues/7>

Maybe here is a workaround:
[Deleting images from a private docker registry](https://stackoverflow.com/questions/25436742/deleting-images-from-a-private-docker-registry/25551160#25551160)
there is a big red "DELETE" button in "Settings" Tab when you login into your Docker Hub.