Diagnose why dockerBuilds do not successfully run on CentOS8 podman hosts

[sxa]

Most recent error from trying to run jdk-linux-aarch64-hotspot on build-equinix-centos8-aarch64-1:

11:25:43   > git checkout -f dab58fcdb5ea0b5c5caa53a547234788248e32ea # timeout=10
11:25:58  Commit message: "Enabling Solaris testing in JDK8 build pipeline (#175)"
[Pipeline] sh
11:31:09  process apparently never started in /home/jenkins/workspace/build-scripts/jobs/jdk/jdk-linux-aarch64-hotspot@tmp/durable-071a2ebe
11:31:09  (running Jenkins temporarily with -Dorg.jenkinsci.plugins.durabletask.BourneShellScript.LAUNCH_DIAGNOSTICS=true might make the problem clearer)
[Pipeline] }

Needs checked on some other CentOS host - possibly the spare Altra I haven't configured yet.

[sxa]

Going to close this as we will not be using CentOS8 on aarch64 hosts going forward as per #2479