add-user.pod.yml

apiVersion: v1
kind: Pod
metadata:
  name: add-user
spec:
  containers:
  - name: doit
    image: busybox:latest
    command:
    - chroot
    - /mnt
    - /usr/sbin/useradd
    - my-username
    securityContext:
      privileged: true
    volumeMounts:
    - name: host
      mountPath: /mnt
  hostIPC: true
  hostPID: true
  restartPolicy: Never
  volumes:
  - name: host
    hostPath:
      path: /