This prevents us needing to attempt to reconstruct the exact indentation
registry side, which is not canonical - so may differ.
Signed-off-by: Justin Chadwell <me@jedevc.com>
Stores complete OCI descriptor instead of digest and platform
fields. This includes the size which was getting lost by not
storing the original manifest bytes.
Attempt to support existing cached files, if not output
the filename with the incorrect content.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>