default: build DATE = $(shell date +%F) SHORT_COMMIT_HASH = $(shell git log -1 --format=%h) build: docker build . -t shnee/dind:latest tag: docker tag shnee/dind:latest shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH) clean: rm-unique -docker rmi shnee/dind:latest rm-unique: -docker rmi shnee/dind:$(DATE)-$(SHORT_COMMIT_HASH) help: @echo TODO REM do me. .PHONY: default build tag clean rm-unique help