Update docker

Changes:

- https://github.com/docker-library/docker/commit/4975dca: Update to 19.03.0 GA

library/docker

@@ -1,35 +1,35 @@
-# this file is generated via https://github.com/docker-library/docker/blob/479e4779eec0a17037a5723be5ddd98cdda965f2/generate-stackbrew-library.sh
+# this file is generated via https://github.com/docker-library/docker/blob/4975dca2dd357705c5613045348402ab664ccdf0/generate-stackbrew-library.sh
 
 Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/docker.git
 
-Tags: 19.03.0-rc3, 19.03-rc, rc, test
+Tags: 19.03.0, 19.03, 19, stable, test, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: cad4d26d9d84c3701e8fcfc922145b569f8dfc22
-Directory: 19.03-rc
+GitCommit: 4975dca2dd357705c5613045348402ab664ccdf0
+Directory: 19.03
 
-Tags: 19.03.0-rc3-dind, 19.03-rc-dind, rc-dind, test-dind
+Tags: 19.03.0-dind, 19.03-dind, 19-dind, stable-dind, test-dind, dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 6438624ec99b859db87dcef2cc75f5a961d1903c
-Directory: 19.03-rc/dind
+GitCommit: 4975dca2dd357705c5613045348402ab664ccdf0
+Directory: 19.03/dind
 
-Tags: 19.03.0-rc3-git, 19.03-rc-git, rc-git, test-git
+Tags: 19.03.0-git, 19.03-git, 19-git, stable-git, test-git, git
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 98ffef81ebfa7601a9ed2f0bf56d78f426bf253c
-Directory: 19.03-rc/git
+GitCommit: 4975dca2dd357705c5613045348402ab664ccdf0
+Directory: 19.03/git
 
-Tags: 18.09.8, 18.09, 18, stable, latest
+Tags: 18.09.8, 18.09, 18
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: cad4d26d9d84c3701e8fcfc922145b569f8dfc22
 Directory: 18.09
 
-Tags: 18.09.8-dind, 18.09-dind, 18-dind, stable-dind, dind
+Tags: 18.09.8-dind, 18.09-dind, 18-dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 6438624ec99b859db87dcef2cc75f5a961d1903c
 Directory: 18.09/dind
 
-Tags: 18.09.8-git, 18.09-git, 18-git, stable-git, git
+Tags: 18.09.8-git, 18.09-git, 18-git
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 91bbc4f7b06c06020d811dafb2266bcd7cf6c06d
 Directory: 18.09/git