Update to docker:1.12.0-rc5 before GA (which is supposed to drop sometime today)

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-rc4, 1.12-rc, rc
-GitCommit: 61353e617f3fe89519de1e00f7de043087839e45
+Tags: 1.12.0-rc5, 1.12-rc, rc
+GitCommit: c35f7c0ded8b4153d5d7711054ac17132a3e7155
 Directory: 1.12-rc
 
-Tags: 1.12.0-rc4-dind, 1.12-rc-dind, rc-dind
+Tags: 1.12.0-rc5-dind, 1.12-rc-dind, rc-dind
 GitCommit: 1c8b144ed9ec49ac8cc7ca75f8628fd8de6c82b5
 Directory: 1.12-rc/dind
 
-Tags: 1.12.0-rc4-git, 1.12-rc-git, rc-git
+Tags: 1.12.0-rc5-git, 1.12-rc-git, rc-git
 GitCommit: 4d1f83ee6e25a5c2bb1c8a04de0643b1a964ba5e
 Directory: 1.12-rc/git