cleanup: drop dockerfile for time being
cleanup: drop dockerfile for time being

This was picked up along with other contents that were in
Cedric's tree.  Dropping until there is a complete story here
that can be used by multiple users.

Signed-off-by: Paul Osborne <b6afffd6c1a00645fdd04b09edf63d034a949a39@gmail.com>

posborne/putio-sync,posborne/putio-sync,posborne/putio-sync