Concrete Image Sharing Classes
------------------------------

These classes expose a particular way of doing image sharing on a
given platform.  ConsoleUser will instantiate one of these whenever it
is doing image sharing.

.. toctree::

    CopperMineChrome63Win7
    CopperMineChrome63Win10
    CopperMineChrome64CentOS7XFCE
    CopperMineChrome64Xubuntu14