Build test container from a Docker container

Corresponds to #1030 but for test container

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

alpine/base/test/.gitignore

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+etc/ssl
+bin/mksh
+bin/sh

alpine/base/test/Dockerfile

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+FROM scratch
+COPY . ./
+CMD ["/bin/sh", "/bin/test.sh"]

alpine/base/test/Makefile

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+# Tag b784b685b2c39b9bed4d58a989d06d8f0281b87c
+MKSH_IMAGE=mobylinux/mksh@sha256:b3ca9febef294d002894b91e0ce0f794235db73a3024be3cae16d34022913de3
+MKSH_BINARY=bin/mksh
+SH_BINARY=bin/sh
+
+# Tag: 41e4b91c9a619e46f76ce2d024067c09b62f07b4
+CACERT_IMAGE=mobylinux/ca-certificates@sha256:6ca2dca9cfb8534a55f3a17f8797943527db5bbac08c98a5c9a4836250f4c548
+CACERT_FILE=etc/ssl/certs/ca-certificates.crt
+
+TEST_SCRIPT=bin/test.sh
+MOBY_WHALE=etc/moby
+
+.PHONY: tag push clean container
+default: push
+
+$(MKSH_BINARY):
+	mkdir -p $(dir $@)
+	docker run --rm --net=none $(MKSH_IMAGE) tar cf - $@ | tar xf -
+
+$(SH_BINARY): $(MKSH_BINARY)
+	mv $(MKSH_BINARY) $(SH_BINARY)
+
+$(CACERT_FILE):
+	mkdir -p $(dir $@)
+	docker run --rm --net=none $(CACERT_IMAGE) tar cf - $@ | tar xf -
+
+# Tag: alpine:3.5
+SHA_IMAGE=alpine@sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8
+
+IMAGE=test
+
+DIRS=dev proc sys
+$(DIRS):
+	mkdir -p $@
+
+DEPS=$(DIRS) $(SH_BINARY) $(CACERT_FILE) $(TEST_SCRIPT) $(MOBY_WHALE)
+
+container: Dockerfile $(DEPS)
+	tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
+
+hash: Dockerfile $(DEPS)
+	find $^ -type f | xargs cat | docker run --rm -i $(SHA_IMAGE) sha1sum - | sed 's/ .*//' > hash
+
+push: hash container
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		(docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash) && \
+		 docker push mobylinux/$(IMAGE):$(shell cat hash))
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+tag: hash container
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash)
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+clean:
+	rm -rf hash $(DIRS) $(MKSH_BINARY) etc/ssl
+
+.DELETE_ON_ERROR:

alpine/base/test/bin/test.sh

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+#!/bin/sh
+
+set -ex
+
+docker version
+docker info
+docker ps
+DOCKER_CONTENT_TRUST=1 docker pull alpine
+docker run --rm alpine true
+docker pull armhf/alpine
+docker run --rm armhf/alpine uname -a
+docker swarm init
+docker run mobylinux/check-config@sha256:4282f589d5a72004c3991c0412e45ba0ab6bb8c0c7d97dc40dabc828700e99ab
+docker run mobylinux/check-kernel-config@sha256:6821a7bce30bd013a6cc190d171228f9b02359e9c792858005f401ab15357575
+cat /etc/moby

alpine/base/test/etc/moby

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+
+                        ##         .
+                  ## ## ##        ==
+               ## ## ## ## ##    ===
+           /"""""""""""""""""\___/ ===
+      ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~
+           \______ o           __/
+             \    \         __/
+              \____\_______/
+