SHA_IMAGE=alpine:3.5@sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8

.PHONY: tag push

BASE=golang:1.7-alpine3.5
IMAGE=containerd

default: push

hash: Dockerfile etc/containerd/config.toml
	DOCKER_CONTENT_TRUST=1 docker pull $(BASE)
	tar cf - $^ | docker build --no-cache -t $(IMAGE):build0 -
	docker run --rm $(IMAGE):build0 | docker build --no-cache -t $(IMAGE):build -
	docker rmi $(IMAGE):build0
	find $^ -type f | xargs cat | docker run --rm -i $(SHA_IMAGE) 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: