In this guide for RHEL8 there is instructions for installing the packages "passt" 
[Building, running, and managing containers | Red Hat Product Documentation|https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html-single/building_running_and_managing_containers/index#con_characteristics-of-podman-buildah-and-skopeo_assembly_starting-with-containers]

We cant find this package in the repositories for RHEL 8, neither via modules, Red Hat Enterprise Linux 8 for x86_64 - BaseOS  or 
Red Hat Enterprise Linux 8 for x86_64 - AppStream