test: Move test-ltp -> ltp

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

test/ltp/Makefile

@@ -0,0 +1,42 @@
+LTP_VERSION=20170116
+
+all: ltp.tar push
+
+# Build LTP and get the result as a tarball
+DEPS=Dockerfile.build Makefile
+ltp.tag: $(DEPS)
+	BUILD=$$(docker build -f $< -q . --build-arg LTP_VERSION=$(LTP_VERSION)) && [ -n "$$BUILD" ] && echo "Built $$BUILD" && echo "$$BUILD" > $@
+
+ltp.tar: ltp.tag
+	docker run --rm --net=none --log-driver=none $(shell cat ltp.tag) tar cf - opt/ltp  > $@
+
+SHASUM=alpine:3.5
+IMAGE=test-ltp-$(LTP_VERSION)
+
+# Note: We do not compute the hash from all the dependencies here
+# because the ltp binaries will change everytime we build. Ideally, we
+# would calculate the hash from the source and the apt-get cache, but
+# it's not that critical.
+hash: Dockerfile.pkg ltp.tar $(DEPS)
+	tar xf ltp.tar
+	tar cf - Dockerfile.pkg opt | docker build --no-cache -t $(IMAGE):build -f Dockerfile.pkg -
+	cat Dockerfile.pkg $(DEPS) | DOCKER_CONTENT_TRUST=1 docker run --rm -i $(SHASUM) 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
+
+.PHONY: clean
+clean:
+	rm -rf opt ltp.tar ltp.tag hash
+
+.DELETE_ON_ERROR: