Update docker

Changes:

- https://github.com/docker-library/docker/commit/1c7a321: Merge pull request https://github.com/docker-library/docker/pull/247 from AkihiroSuda/rootlesskit-v0.10.0
- https://github.com/docker-library/docker/commit/399f205: bump up rootlesskit to v0.10.0
- https://github.com/docker-library/docker/commit/93c19df: Update to 19.03.12

library/docker

@@ -11,12 +11,12 @@ Directory: 19.03
 
 Tags: 19.03.12-dind, 19.03-dind, 19-dind, stable-dind, test-dind, dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: a73d96e731e2dd5d6822c99a9af4dcbfbbedb2be
+GitCommit: 93c19dff54de9876f736b3aa8026be5ad5987388
 Directory: 19.03/dind
 
 Tags: 19.03.12-dind-rootless, 19.03-dind-rootless, 19-dind-rootless, stable-dind-rootless, test-dind-rootless, dind-rootless
 Architectures: amd64
-GitCommit: 25c81c65fe4e971ff75e67df38e8b9970b523f6e
+GitCommit: 399f205733e0162fe6f6529fad8f2231b843606e
 Directory: 19.03/dind-rootless
 
 Tags: 19.03.12-git, 19.03-git, 19-git, stable-git, test-git, git