API_NODE_PATH:=../../05-example-web-application/client-react/ N?=0 .PHONY: build-N build-N: docker build --file ./Dockerfile.$(N) -t client-react:$(N) ${API_NODE_PATH} .PHONY: build-all build-all: for number in 0 1 2 3 4 5; do \ N=$$number $(MAKE) build-N; \ done