Update docker

Changes:

- https://github.com/docker-library/docker/commit/341e196: Add 18.09.5-rc1

library/docker

@@ -19,6 +19,21 @@ Architectures: amd64, arm32v6, arm64v8, ppc64le, s390x
 GitCommit: 98ffef81ebfa7601a9ed2f0bf56d78f426bf253c
 Directory: 19.03-rc/git
 
+Tags: 18.09.5-rc1, 18.09-rc
+Architectures: amd64, arm32v6, arm64v8, ppc64le, s390x
+GitCommit: 341e19641e58cccff1453653425fc56c07e8944d
+Directory: 18.09-rc
+
+Tags: 18.09.5-rc1-dind, 18.09-rc-dind
+Architectures: amd64, arm32v6, arm64v8, ppc64le, s390x
+GitCommit: 341e19641e58cccff1453653425fc56c07e8944d
+Directory: 18.09-rc/dind
+
+Tags: 18.09.5-rc1-git, 18.09-rc-git
+Architectures: amd64, arm32v6, arm64v8, ppc64le, s390x
+GitCommit: 341e19641e58cccff1453653425fc56c07e8944d
+Directory: 18.09-rc/git
+
 Tags: 18.09.4, 18.09, 18, stable, latest
 Architectures: amd64, arm32v6, arm64v8, ppc64le, s390x
 GitCommit: 3d71bbc03dfd209ef7cc14380e235731daf2690a