Kubernetes deployment makefile

Makefile

APP_IMAGE_TAG=$(shell git log -n 1 --pretty=format:%h server)
NGINX_IMAGE_TAG=$(shell git log -n 1 --pretty=format:%h nginx)
KUBE_TAG=$(shell git log -n 1 --pretty=format:%h kube)
RC_TAG=$(APP_IMAGE_TAG)$(NGINX_IMAGE_TAG)$(KUBE_TAG)

APP_IMAGE=my-repo/api-app:$(APP_IMAGE_TAG)
NGINX_IMAGE=my-repo/api-nginx:$(NGINX_IMAGE_TAG)

OLD_RC=$(shell kubectl get rc -l app=api -o template '--template={{(index .items 0).metadata.name}}')

define generate-rc
	sed -e 's/{{RC_TAG}}/$(RC_TAG)/g;s/{{APP_IMAGE}}/$(APP_IMAGE)/g;s/{{NGINX_IMAGE}}/$(NGINX_IMAGE)/g' kube/rc.yml
endef

define get-current-rc
	kubectl get rc api-$(RC_TAG)
endef

deploy: docker
	$(call get-current-rc) || $(call generate-rc) | kubectl rolling-update $(OLD_RC) --update-period="5s" -f -

docker: docker-api docker-nginx

docker-nginx:
	docker pull $(NGINX_IMAGE) || (docker build -t $(NGINX_IMAGE) nginx && docker push $(NGINX_IMAGE))

docker-api:
	docker pull $(APP_IMAGE) || (docker build -t $(APP_IMAGE) server && docker push $(APP_IMAGE))