tree c99dba4a64c273d4c2fb09e0e073d2fa8da3e305
parent 9dd398358c09bb01258bade00cfc911db3fcc7a5
author Kir Kolyshkin <kolyshkin@gmail.com> 1517353305 -0800
committer Silvin Lubecki <silvin.lubecki@docker.com> 1584958293 +0000

daemon.cleanupContainer: nullify container RWLayer upon release

ReleaseRWLayer can and should only be called once (unless it returns
an error), but might be called twice in case of a failure from
`system.EnsureRemoveAll(container.Root)`. This results in the
following error:

> Error response from daemon: driver "XXX" failed to remove root filesystem for YYY: layer not retained

The obvious fix is to set container.RWLayer to nil as soon as
ReleaseRWLayer() succeeds.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit e9b9e4ace294230c6b8eb010eda564a2541c4564)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>