docker/docker — pull request #9826 by icecrime (2014-12-27 00:34:06+00:00)
Title: Support whitespace in paths for ADD and COPY

This PR takes on @seongyeol37 work on supporting whitespace in paths for `ADD` and `COPY` Dockerfile instructions. It reverts an unrelated commit submitted as part of #8406, and adds tests and documentations for the new features.

Fixes #8318.
Replaces #8406.