Update Docker to 1.13.0-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: 1.13.0-rc1, 1.13-rc, rc
-GitCommit: 737f83092a47b012d09a0cbf0ed72759550301cb
+Tags: 1.13.0-rc2, 1.13-rc, rc
+GitCommit: 311dcd3d4de06631fd8ca9affdec4a4a6b4d5512
 Directory: 1.13-rc
 
-Tags: 1.13.0-rc1-dind, 1.13-rc-dind, rc-dind
+Tags: 1.13.0-rc2-dind, 1.13-rc-dind, rc-dind
 GitCommit: c1af76ec4c97ff24dcf6675b55b12105216dc711
 Directory: 1.13-rc/dind
 
-Tags: 1.13.0-rc1-git, 1.13-rc-git, rc-git
+Tags: 1.13.0-rc2-git, 1.13-rc-git, rc-git
 GitCommit: 737f83092a47b012d09a0cbf0ed72759550301cb
 Directory: 1.13-rc/git