.PHONY: tag push default: push ORG?=linuxkit IMAGE=sshd DEPS=Dockerfile etc/motd etc/ssh/sshd_config usr/bin/ssh.sh HASH?=$(shell git ls-tree HEAD -- ../$(notdir $(CURDIR)) | awk '{print $$3}') tag: $(DEPS) docker build --squash --no-cache --network=none -t $(ORG)/$(IMAGE):$(HASH) . push: tag DOCKER_CONTENT_TRUST=1 docker pull $(ORG)/$(IMAGE):$(HASH) || \ DOCKER_CONTENT_TRUST=1 docker push $(ORG)/$(IMAGE):$(HASH)