Reinstating the native dir-copying (over `cp -R`) after fixing the issue
Reinstating the native dir-copying (over `cp -R`) after fixing the issue

Signed-off-by: Alex Schlessinger <81c3837a232632e4ca4324a04e5e2052dfe1a9ec@modcloth.com>

winchman/builder-core,rafecolton/docker-builder,rafecolton/docker-builder,rafecolton/docker-builder