Filezilla Directory /var/lib/docker: permission denied

filezilla Directory /var/lib/docker: permission denied

1) Open putty
2) sudo su - # switch user to root
3) cp /var/lib/docker/containers /tmp/my-docker-folder # Copy folder to /tmp
4) Go back to Filezilla and you will find the folder in /tmp/my-docker-folder
5) After you are done, run rm -rf /tmp/my-docker-folder to clean