Running chroot from a unprivileged pod fails in OCP 4

Issue

• SFTP pods failing to start because missing permissions.

• Pod fail to start (crashLoopBackOff) due to not enough permission provided to the pod with the following error:

  mkdir: cannot create directory '/var/run/sftp': Permission denied
  /entrypoint: Error on line 34: mkdir -p "$(dirname $userConfFinalPath)"
  

• Pods fail to start (crashLoopBackOff) due to the SCC (Security Context Constraints) being too restrictive with the following error:

  chroot("/run/sshd"): Operation not permitted [preauth]