Add more info about when build cache is invalidated/used - Issue #3636
Plus some edits as suggested by @jamtur01

Closes #3636

Signed-off-by: Doug Davis <dug@us.ibm.com>
Update libcontainer to c744f6470e37be5ce1f1ae09b84

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Update native driver to set RootFs

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Strongly type exec driver context

This also removes dead code in the native driver for a past feature that
was never fully implemented.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Fixed simple typo

Signed-off-by: Scott Collier <emailscottcollier@gmail.com>
Merge pull request #8295 from crosbymichael/type-exec-context

Strongly type exec driver context
Merge pull request #8293 from crosbymichael/update-libcontainer-sep8

Update libcontainer to c744f6470e37be5ce1f1ae09b842c15c1bee120d
Merge pull request #8296 from scollier/typo

Fixed simple typo
Doc update to clarify EXPOSE vs -p functionality.

Signed-off-by: Daniel Farrell <dfarrell@redhat.com>
Merge pull request #8280 from duglin/Issue3636

Add more info about when build cache is invalidated/used - Issue #3636
Merge pull request #8281 from dfarrell07/master

Doc update to clarify EXPOSE vs -p functionality.