Yong Tang 4bd3e0fe3d Fix docker exec -u issue after docker daemon restart ...

This fix tries to address the issue raised in 29342 where
`docker exec -u` after docker daemon restart returns an error:
```
unable to find user test: no matching entries in passwd file
```

The reason was that `container.BaseFS` is not present after restart.

This fix adds the `daemon.Mount` during the restore to bring up the
`container.BaseFS`.

An integration test has been added to cover the changes.

This fix fixes 29342.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 7feb2a17e4b9d1a5305a8a44004e916b79cbdd97
Component: engine

2016-12-13 22:36:30 -08:00

components/engine

Fix docker exec -u issue after docker daemon restart

2016-12-13 22:36:30 -08:00

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