According the documentation you're giving, you need to remove run-build from the command :
$ oc run NAME --image=<image> \
Million dollar question - are you running your fluentD as a DaemonSet? If not, there's a chance that fluentd simply isn't running on the node where some containers live.
Otherwise, my best guess is, it's missing permissions to read from all namespaces, especially since you mentioned you haven't attached a ServiceAccount to it. If you used a public FluentD ...