Chapter 6. Notable changes to containers

Docker is not included in RHEL 8.0. For working with containers, use the podman, buildah, skopeo, and runc tools.

For information on these tools and on using containers in RHEL 8, see Building, running, and managing containers.

The podman tool has been released as a fully supported feature.

The podman tool manages pods, container images, and containers on a single node. It is built on the libpod library, which enables management of containers and groups of containers, called pods.

To learn how to use podman, see Building, running, and managing containers.

In RHEL 8 GA, Red Hat Universal Base Images (UBI) are newly available. UBIs replace some of the images Red Hat previously provided, such as the standard and the minimal RHEL base images.

Unlike older Red Hat images, UBIs are freely redistributable. This means they can be used in any environment and shared anywhere. You can use them even if you are not a Red Hat customer.

For UBI documentation, see Building, running, and managing containers.

The support for rootless containers is available as a technology preview in RHEL 8.

Rootless containers are containers that are created and managed by regular system users without administrative permissions.