Update docker

Changes:

- https://github.com/docker-library/docker/commit/184d0e7: Update to 19.03.13-beta2

library/docker

@@ -4,22 +4,22 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/docker.git
 
-Tags: 19.03.13-beta1, 19.03-rc, rc, test
+Tags: 19.03.13-beta2, 19.03-rc, rc, test
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 4f5b0cb5438527c6913a943ae07b4d2b1eaa8393
+GitCommit: 184d0e7687beb67e227d1ce2e0ab79a357613566
 Directory: 19.03-rc
 
-Tags: 19.03.13-beta1-dind, 19.03-rc-dind, rc-dind, test-dind
+Tags: 19.03.13-beta2-dind, 19.03-rc-dind, rc-dind, test-dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 4f5b0cb5438527c6913a943ae07b4d2b1eaa8393
 Directory: 19.03-rc/dind
 
-Tags: 19.03.13-beta1-dind-rootless, 19.03-rc-dind-rootless, rc-dind-rootless, test-dind-rootless
+Tags: 19.03.13-beta2-dind-rootless, 19.03-rc-dind-rootless, rc-dind-rootless, test-dind-rootless
 Architectures: amd64
 GitCommit: 399f205733e0162fe6f6529fad8f2231b843606e
 Directory: 19.03-rc/dind-rootless
 
-Tags: 19.03.13-beta1-git, 19.03-rc-git, rc-git, test-git
+Tags: 19.03.13-beta2-git, 19.03-rc-git, rc-git, test-git
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 7a67842e7ff12c1426ae6a67ac1b7a701b51f3df
 Directory: 19.03-rc/git