When calling docker load on an image tar containing a compressed layer,
apply NewProgressReader to the compressed layer (whose size is known), not
the uncompressed stream. This fixes progress reporting to the client in
this case.
Signed-off-by: John Starks <jostarks@microsoft.com>
Upstream-commit: 5fd8edec1c3fff52eebe2d62694c93141d8756ba
Component: engine