kubernetes PodSecurityPolicy set to runAsNonRoot, container has runAsNonRoot and image has non-numeric user (appuser), cannot verify user is non-root
Here is the implementation of the verification:
case uid == nil && len(username) > 0: return fmt.Errorf("container has runAsNonRoot and image has non-numeric user (%s), cannot verify user is non-root", username)And here is the validation call with the comment:
// Verify RunAsNonRoot. Non-root verification only supports numeric user.if err := verifyRunAsNonRoot(pod, container, uid, username); err != nil { return nil, cleanupAction, err}As you can see, the only reason of that messages in your case is uid == nil. Based on the comment in the source code, we need to set a numeric user value.
So, for the user with UID=999 you can do it in your pod definition like that:
securityContext: runAsUser: 999