Update Docker to 1.12.0-rc2

library/docker

@@ -4,15 +4,15 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/docker.git
 
-Tags: 1.12.0-rc1, 1.12-rc, rc
-GitCommit: 4d1f83ee6e25a5c2bb1c8a04de0643b1a964ba5e
+Tags: 1.12.0-rc2, 1.12-rc, rc
+GitCommit: 99287145029122cf49321fa2a055d14240001d1d
 Directory: 1.12-rc
 
-Tags: 1.12.0-rc1-dind, 1.12-rc-dind, rc-dind
+Tags: 1.12.0-rc2-dind, 1.12-rc-dind, rc-dind
 GitCommit: 4d1f83ee6e25a5c2bb1c8a04de0643b1a964ba5e
 Directory: 1.12-rc/dind
 
-Tags: 1.12.0-rc1-git, 1.12-rc-git, rc-git
+Tags: 1.12.0-rc2-git, 1.12-rc-git, rc-git
 GitCommit: 4d1f83ee6e25a5c2bb1c8a04de0643b1a964ba5e
 Directory: 1.12-rc/git