Makefile

# This Makefile automates possible operations of this project.
#
# Images and description on Docker Hub will be automatically rebuilt on
# pushes to `master` branch of this repo.
#
# It's still possible to build, tag and push images manually. Just use:
#	make release


IMAGE_NAME := stefanso/lftp
VERSION ?= latest
TAGS ?= latest


comma := ,
eq = $(if $(or $(1),$(2)),$(and $(findstring $(1),$(2)),\
                                $(findstring $(2),$(1))),1)



# Build Docker image.
#
# Usage:
#	make image [VERSION=<image-version>]
#	           [no-cache=(no|yes)]

image:
	docker build --network=host --force-rm \
		$(if $(call eq,$(no-cache),yes),--no-cache --pull,) \
		-t $(IMAGE_NAME):$(VERSION) .



# Tag Docker image with given tags.
#
# Usage:
#	make tags [VERSION=<image-version>]
#	          [TAGS=<docker-tag-1>[,<docker-tag-2>...]]

tags:
	$(foreach tag,$(subst $(comma), ,$(TAGS)),\
		$(call tags.do,$(VERSION),$(tag)))
define tags.do
	$(eval from := $(strip $(1)))
	$(eval to := $(strip $(2)))
	docker tag $(IMAGE_NAME):$(from) $(IMAGE_NAME):$(to)
endef



# Manually push Docker images to Docker Hub.
#
# Usage:
#	make push [TAGS=<docker-tag-1>[,<docker-tag-2>...]]

push:
	$(foreach tag,$(subst $(comma), ,$(TAGS)),\
		$(call push.do,$(tag)))
define push.do
	$(eval tag := $(strip $(1)))
	docker push $(IMAGE_NAME):$(tag)
endef



# Make manual release of Docker images to Docker Hub.
#
# Usage:
#	make release [VERSION=<image-version>] [no-cache=(no|yes)]
#	             [TAGS=<docker-tag-1>[,<docker-tag-2>...]]

release: | image tags push



.PHONY: image tags push release