Carry #11675
Aside from what #11675 says, to me a key usecase for this is to support
more than one Docker cli running at the same time but each may have its
own set of config files.
Signed-off-by: Doug Davis <dug@us.ibm.com>
Upstream-commit: daced1d30345aca06857f874dfb48b7e90cb409b
Component: engine