Understanding Registeries

• Container registries are used to provide access to container images
• Registries make distribution of containers easier: anyone can publish
• images on public registries
• Docker Hub is the biggest registry
• Other registries exist as well, like quay.io
• It's also possible to create private registries'

Accessing Registeries

Access to registries is normally free. In some cases, additional authorization is required and you'll need an account to access registry contents

On Docker Hub, an account gives access to additional features -

• Higher image pull limit
• Web hooks connecting to GitHub

Use the browser-based login, or docker login from the command line