On a freshly installed RHEL8 Beta workstation system, with "container tools" package set selected in teh installer (so you get podman);

attempting to launch the jboss-eap-7/eap71-openshift image via podman as a non-root user and it fails to launch, complaining about an invalid argument to standalone.sh (then printing the standalone.sh help output)

It looks like, in this configuration, podman tries to start the container with an IPv6-based local network address, and this is being passed through as an IP to the standalone.sh script, which does not accept IPv6-format addresses.

Note that this issue might be a wider problem than just the EAP7 image. I haven't done further investigation yet