docker/docker — pull request #8461 by SvenDowideit (2014-10-08 01:33:05+00:00)
Title: Add a best practice to reduce cache invalidations

inspired by https://github.com/docker-training/docker-fundamentals/pull/206

Signed-off-by: Sven Dowideit

merci @huslage

@fredlf @jamtur01 @ostezer