Update docker

[tianon]

Changes:

• docker-library/docker@4f5b0cb: Update to 19.03.13-beta1

[github-actions]

Diff for 52e59b2:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index c034727..e81c979 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -1,21 +1,40 @@
 Maintainers: Tianon Gravi <tianon@dockerproject.org> (@tianon), Joseph Ferguson <yosifkit@gmail.com> (@yosifkit)
 GitRepo: https://github.com/docker-library/docker.git
 
-Tags: 19.03.12, 19.03, 19, stable, test, latest
+Tags: 19.03.12, 19.03, 19, stable, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 86f7f4b563c7c6fe4620c5a8d82694a78f41989f
 Directory: 19.03
 
-Tags: 19.03.12-dind, 19.03-dind, 19-dind, stable-dind, test-dind, dind
+Tags: 19.03.12-dind, 19.03-dind, 19-dind, stable-dind, dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 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
+Tags: 19.03.12-dind-rootless, 19.03-dind-rootless, 19-dind-rootless, stable-dind-rootless, dind-rootless
 GitCommit: 399f205733e0162fe6f6529fad8f2231b843606e
 Directory: 19.03/dind-rootless
 
-Tags: 19.03.12-git, 19.03-git, 19-git, stable-git, test-git, git
+Tags: 19.03.12-git, 19.03-git, 19-git, stable-git, git
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: 7a67842e7ff12c1426ae6a67ac1b7a701b51f3df
 Directory: 19.03/git
+
+Tags: 19.03.13-beta1, 19.03-rc, rc, test
+Architectures: amd64, arm32v6, arm32v7, arm64v8
+GitCommit: 4f5b0cb5438527c6913a943ae07b4d2b1eaa8393
+Directory: 19.03-rc
+
+Tags: 19.03.13-beta1-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
+GitCommit: 399f205733e0162fe6f6529fad8f2231b843606e
+Directory: 19.03-rc/dind-rootless
+
+Tags: 19.03.13-beta1-git, 19.03-rc-git, rc-git, test-git
+Architectures: amd64, arm32v6, arm32v7, arm64v8
+GitCommit: 7a67842e7ff12c1426ae6a67ac1b7a701b51f3df
+Directory: 19.03-rc/git
diff --git a/_bashbrew-list b/_bashbrew-list
index 8d18373..abfc178 100644
--- a/_bashbrew-list
+++ b/_bashbrew-list
@@ -6,14 +6,26 @@ docker:19.03
 docker:19.03-dind
 docker:19.03-dind-rootless
 docker:19.03-git
+docker:19.03-rc
+docker:19.03-rc-dind
+docker:19.03-rc-dind-rootless
+docker:19.03-rc-git
 docker:19.03.12
 docker:19.03.12-dind
 docker:19.03.12-dind-rootless
 docker:19.03.12-git
+docker:19.03.13-beta1
+docker:19.03.13-beta1-dind
+docker:19.03.13-beta1-dind-rootless
+docker:19.03.13-beta1-git
 docker:dind
 docker:dind-rootless
 docker:git
 docker:latest
+docker:rc
+docker:rc-dind
+docker:rc-dind-rootless
+docker:rc-git
 docker:stable
 docker:stable-dind
 docker:stable-dind-rootless
diff --git a/docker_dind-rootless/Dockerfile b/docker_test-dind-rootless/Dockerfile
similarity index 99%
copy from docker_dind-rootless/Dockerfile
copy to docker_test-dind-rootless/Dockerfile
index e9f8cfc..7b974d0 100644
--- a/docker_dind-rootless/Dockerfile
+++ b/docker_test-dind-rootless/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker:19.03-dind
+FROM docker:19.03-rc-dind
 
 # busybox "ip" is insufficient:
 #   [rootlesskit:child ] error: executing [[ip tuntap add name tap0 mode tap] [ip link set tap0 address 02:50:00:00:00:01]]: exit status 1
diff --git a/docker_dind/Dockerfile b/docker_test-dind/Dockerfile
similarity index 98%
copy from docker_dind/Dockerfile
copy to docker_test-dind/Dockerfile
index 37bcfa7..563c07d 100644
--- a/docker_dind/Dockerfile
+++ b/docker_test-dind/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker:19.03
+FROM docker:19.03-rc
 
 # https://github.com/docker/docker/blob/master/project/PACKAGERS.md#runtime-dependencies
 RUN set -eux; \
diff --git a/docker_dind/dockerd-entrypoint.sh b/docker_test-dind/dockerd-entrypoint.sh
similarity index 100%
copy from docker_dind/dockerd-entrypoint.sh
copy to docker_test-dind/dockerd-entrypoint.sh
diff --git a/docker_git/Dockerfile b/docker_test-git/Dockerfile
similarity index 57%
copy from docker_git/Dockerfile
copy to docker_test-git/Dockerfile
index 2c8edb9..88183ef 100644
--- a/docker_git/Dockerfile
+++ b/docker_test-git/Dockerfile
@@ -1,3 +1,3 @@
-FROM docker:19.03
+FROM docker:19.03-rc
 
 RUN apk add --no-cache git
diff --git a/docker_latest/Dockerfile b/docker_test/Dockerfile
similarity index 97%
copy from docker_latest/Dockerfile
copy to docker_test/Dockerfile
index e5873be..42804f6 100644
--- a/docker_latest/Dockerfile
+++ b/docker_test/Dockerfile
@@ -11,8 +11,8 @@ RUN apk add --no-cache \
 # - docker run --rm debian:stretch grep '^hosts:' /etc/nsswitch.conf
 RUN [ ! -e /etc/nsswitch.conf ] && echo 'hosts: files dns' > /etc/nsswitch.conf
 
-ENV DOCKER_CHANNEL stable
-ENV DOCKER_VERSION 19.03.12
+ENV DOCKER_CHANNEL test
+ENV DOCKER_VERSION 19.03.13-beta1
 # TODO ENV DOCKER_SHA256
 # https://github.com/docker/docker-ce/blob/5b073ee2cf564edee5adca05eee574142f7627bb/components/packaging/static/hash_files !!
 # (no SHA file artifacts on download.docker.com yet as of 2017-06-07 though)
diff --git a/docker_latest/docker-entrypoint.sh b/docker_test/docker-entrypoint.sh
similarity index 100%
copy from docker_latest/docker-entrypoint.sh
copy to docker_test/docker-entrypoint.sh
diff --git a/docker_latest/modprobe.sh b/docker_test/modprobe.sh
similarity index 100%
copy from docker_latest/modprobe.sh
copy to docker_test/modprobe.sh