This security measure is inappropriate here as it will make all client
refuse to backup whenever a new docker image is rebuild.
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>
Includes ``mirror-dir-check`` with the ``mirror-dir check`` call, the
replacement of ``mirror-dir`` call is ``mirror-dir backup``. An additional
``mirror-dir report`` was added.
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>