Update docker

[tianon]

Changes:

• docker-library/docker@5373612: Merge pull request Add initial jq-based templating engine docker#262 from infosiftr/jq-template
• docker-library/docker@12d1c27: Add initial jq-based templating engine

[github-actions]

Diff for 9fc21e6:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index 609ddb7..9b78433 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -3,19 +3,19 @@ GitRepo: https://github.com/docker-library/docker.git
 
 Tags: 19.03.13, 19.03, 19, stable, test, latest
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 66c83a536259775694aa5d316426f3ff3ddcda6e
+GitCommit: 12d1c2763b54d29137ec448a3e4ad1a9aefae1a0
 Directory: 19.03
 
 Tags: 19.03.13-dind, 19.03-dind, 19-dind, stable-dind, test-dind, dind
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 93c19dff54de9876f736b3aa8026be5ad5987388
+GitCommit: 12d1c2763b54d29137ec448a3e4ad1a9aefae1a0
 Directory: 19.03/dind
 
 Tags: 19.03.13-dind-rootless, 19.03-dind-rootless, 19-dind-rootless, stable-dind-rootless, test-dind-rootless, dind-rootless
-GitCommit: 399f205733e0162fe6f6529fad8f2231b843606e
+GitCommit: 12d1c2763b54d29137ec448a3e4ad1a9aefae1a0
 Directory: 19.03/dind-rootless
 
 Tags: 19.03.13-git, 19.03-git, 19-git, stable-git, test-git, git
 Architectures: amd64, arm32v6, arm32v7, arm64v8
-GitCommit: 7a67842e7ff12c1426ae6a67ac1b7a701b51f3df
+GitCommit: 12d1c2763b54d29137ec448a3e4ad1a9aefae1a0
 Directory: 19.03/git
diff --git a/docker_dind-rootless/Dockerfile b/docker_dind-rootless/Dockerfile
index e9f8cfc..d008731 100644
--- a/docker_dind-rootless/Dockerfile
+++ b/docker_dind-rootless/Dockerfile
@@ -1,3 +1,9 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
 FROM docker:19.03-dind
 
 # busybox "ip" is insufficient:
@@ -15,24 +21,15 @@ RUN set -eux; \
 
 RUN set -eux; \
 	\
-# this "case" statement is generated via "update.sh"
 	apkArch="$(apk --print-arch)"; \
 	case "$apkArch" in \
-# amd64
-		x86_64) dockerArch='x86_64' ;; \
-# arm32v6
-		armhf) dockerArch='armel' ;; \
-# arm32v7
-		armv7) dockerArch='armhf' ;; \
-# arm64v8
-		aarch64) dockerArch='aarch64' ;; \
-		*) echo >&2 "error: unsupported architecture ($apkArch)"; exit 1 ;;\
+		'x86_64') \
+			url='https://download.docker.com/linux/static/stable/x86_64/docker-rootless-extras-19.03.13.tgz'; \
+			;; \
+		*) echo >&2 "error: unsupported architecture ($apkArch)"; exit 1 ;; \
 	esac; \
 	\
-	if ! wget -O rootless.tgz "https://download.docker.com/linux/static/${DOCKER_CHANNEL}/${dockerArch}/docker-rootless-extras-${DOCKER_VERSION}.tgz"; then \
-		echo >&2 "error: failed to download 'docker-rootless-extras-${DOCKER_VERSION}' from '${DOCKER_CHANNEL}' for '${dockerArch}'"; \
-		exit 1; \
-	fi; \
+	wget -O rootless.tgz "$url"; \
 	\
 	tar --extract \
 		--file rootless.tgz \
diff --git a/docker_dind/Dockerfile b/docker_dind/Dockerfile
index 37bcfa7..aa10b26 100644
--- a/docker_dind/Dockerfile
+++ b/docker_dind/Dockerfile
@@ -1,3 +1,9 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
 FROM docker:19.03
 
 # https://github.com/docker/docker/blob/master/project/PACKAGERS.md#runtime-dependencies
diff --git a/docker_git/Dockerfile b/docker_git/Dockerfile
index 2c8edb9..5fa563b 100644
--- a/docker_git/Dockerfile
+++ b/docker_git/Dockerfile
@@ -1,3 +1,9 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
 FROM docker:19.03
 
 RUN apk add --no-cache git
diff --git a/docker_latest/Dockerfile b/docker_latest/Dockerfile
index 222ad58..395b13a 100644
--- a/docker_latest/Dockerfile
+++ b/docker_latest/Dockerfile
@@ -1,3 +1,9 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
 FROM alpine:3.12
 
 RUN apk add --no-cache \
@@ -11,7 +17,6 @@ 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 19.03.13
 # TODO ENV DOCKER_SHA256
 # https://github.com/docker/docker-ce/blob/5b073ee2cf564edee5adca05eee574142f7627bb/components/packaging/static/hash_files !!
@@ -19,24 +24,24 @@ ENV DOCKER_VERSION 19.03.13
 
 RUN set -eux; \
 	\
-# this "case" statement is generated via "update.sh"
 	apkArch="$(apk --print-arch)"; \
 	case "$apkArch" in \
-# amd64
-		x86_64) dockerArch='x86_64' ;; \
-# arm32v6
-		armhf) dockerArch='armel' ;; \
-# arm32v7
-		armv7) dockerArch='armhf' ;; \
-# arm64v8
-		aarch64) dockerArch='aarch64' ;; \
-		*) echo >&2 "error: unsupported architecture ($apkArch)"; exit 1 ;;\
+		'x86_64') \
+			url='https://download.docker.com/linux/static/stable/x86_64/docker-19.03.13.tgz'; \
+			;; \
+		'armhf') \
+			url='https://download.docker.com/linux/static/stable/armel/docker-19.03.13.tgz'; \
+			;; \
+		'armv7') \
+			url='https://download.docker.com/linux/static/stable/armhf/docker-19.03.13.tgz'; \
+			;; \
+		'aarch64') \
+			url='https://download.docker.com/linux/static/stable/aarch64/docker-19.03.13.tgz'; \
+			;; \
+		*) echo >&2 "error: unsupported architecture ($apkArch)"; exit 1 ;; \
 	esac; \
 	\
-	if ! wget -O docker.tgz "https://download.docker.com/linux/static/${DOCKER_CHANNEL}/${dockerArch}/docker-${DOCKER_VERSION}.tgz"; then \
-		echo >&2 "error: failed to download 'docker-${DOCKER_VERSION}' from '${DOCKER_CHANNEL}' for '${dockerArch}'"; \
-		exit 1; \
-	fi; \
+	wget -O docker.tgz "$url"; \
 	\
 	tar --extract \
 		--file docker.tgz \