第 3 章 Working with container registries

A container registry is a repository or collection of repositories for storing container images and container-based application artifacts. The registries that Red Hat provides are:

To get container images from a remote registry, such as Red Hat’s own container registry, and add them to your local system, use the podman pull command:

# podman pull <registry>[:<port>]/[<namespace>/]<name>:<tag>

where <registry>[:<port>]/[<namespace>/]<name>:<tag> is the name of the container image.

For example, the registry.redhat.io/ubi10/ubi container image is identified by:

If there are multiple versions of the same image, add a tag to explicitly specify the image name. By default, Podman uses the :latest tag, for example ubi10/ubi:latest.

Some registries also use <namespace> to distinguish between images with the same <name> owned by different users or organizations. For example:

For details on the transition to registry.redhat.io, see Red Hat Container Registry Authentication. Before you can pull containers from registry.redhat.io, you need to authenticate using your RHEL Subscription credentials.