Move mount back to its own package, not inside docker

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

pkg/docker-ce/Dockerfile

@@ -38,7 +38,5 @@ RUN set -x \
 	&& rm docker.tgz \
 	&& docker -v
 
-COPY . ./
-
 # use the Docker copy of tini as our init for zombie reaping
-ENTRYPOINT ["/usr/bin/docker-init", "/bin/sh", "/docker.sh"]
+ENTRYPOINT ["/usr/bin/docker-init", "/usr/bin/dockerd"]

pkg/docker-ce/Makefile

@@ -5,7 +5,7 @@ IMAGE=docker-ce
 
 default: push
 
-hash: Dockerfile docker.sh
+hash: Dockerfile
 	DOCKER_CONTENT_TRUST=1 docker pull $(BASE)
 	tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
 	docker run --entrypoint /bin/sh --rm $(IMAGE):build -c 'cat $^ /lib/apk/db/installed | sha1sum' | sed 's/ .*//' > $@

pkg/mount/Dockerfile

@@ -0,0 +1,11 @@
+FROM alpine:3.5
+
+RUN \
+  apk update && apk upgrade -a && \
+  apk add --no-cache \
+  jq \
+  sfdisk \
+  && true
+
+COPY . ./
+CMD ["/bin/sh", "/mount.sh"]

pkg/mount/Makefile

@@ -0,0 +1,29 @@
+.PHONY: tag push
+
+BASE=alpine:3.5
+IMAGE=mount
+
+default: push
+
+hash: Dockerfile mount.sh
+	DOCKER_CONTENT_TRUST=1 docker pull $(BASE)
+	tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
+	docker run --rm --entrypoint /bin/sh $(IMAGE):build -c "cat $^ /lib/apk/db/installed | sha1sum" | sed 's/ .*//' > $@
+
+push: hash
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		(docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash) && \
+		 docker push mobylinux/$(IMAGE):$(shell cat hash))
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+tag: hash
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash)
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+clean:
+	rm -f hash
+
+.DELETE_ON_ERROR:

pkg/mount/mount.sh

@@ -2,12 +2,14 @@
 
 set -x
 
+MOUNTPOINT="$1"
+
+[ -z "$MOUNTPOINT" ] && echo "No mountpoint specified" && exit 1
+
+mkdir -p "$MOUNTPOINT"
+
 mount_drive()
 {
-	MOUNTPOINT=/var/lib/docker
-
-	mkdir -p "$MOUNTPOINT"
-
 	# TODO fix for multiple disks, cdroms etc
 	DEVS="$(find /dev -maxdepth 1 -type b ! -name 'loop*' ! -name 'nbd*' | grep -v '[0-9]$' | sed 's@.*/dev/@@' | sort)"
 
@@ -28,11 +30,6 @@ mount_drive()
 	done
 
 	echo "WARNING: Failed to mount a persistent volume (is there one?)"
-
-	# not sure if we want to fatally bail here, in some debug situations it is ok
-	# exit 1
 }
 
 mount_drive
-
-exec /usr/bin/dockerd