ElasticMapsServer 9.x images do not start on OpenShift. This seems to be also confirmed by our E2E tests.

ems-sample-ems-7fd68c75c7-fd2wd              0/1     CreateContainerError   0          32m

 oc describe pods ems-sample-ems-7fd68c75c7-fd2wd

Warning  Failed          30m (x9 over 31m)      kubelet            Error: container create failed: open executable: Operation not permitted

Beyond understanding the root cause we should also decide if we want to run E2E tests for the next stack release on OCP. The rationale would be that OCP is using a different container runtime, with a behavior that may differ from containerd.