Difference between Docker registry and repository

Question

I\'m confused as to the difference between docker registries and repositories. It seems like the Docker documentation uses the two words interchangeably. Also, repositories

Answer 1

From the book Using Docker, Developing and deploying Software with Containers

Registries, Repositories, Images, and Tags

There is a hierarchical system for storing images. The following terminology is used:

Registry

A service responsible for hosting and distributing images. The default registry is the Docker Hub.

Repository

A collection of related images (usually providing different versions of the same application or service).

Tag

An alphanumeric identifier attached to images within a repository (e.g., 14.04 or stable ).

So the command docker pull amouat/revealjs:latest will download the image tagged latest within the amouat/revealjs repository from the Docker Hub registry.