Sample Makefile for docker builds - see http://blog.dixo.net/2015/07/building-docker-containers-with-make-on-coreos/

Makefile

# Example Makefile for docker builds
# See http://blog.dixo.net/2015/07/building-docker-containers-with-make-on-coreos/

#-----------------------------------------------------------------------------
# configuration - see also 'make help' for list of targets
#-----------------------------------------------------------------------------

# name of container 
CONTAINER_NAME = myregistry.example.com:5000/mycontainer:latest

# list of dependancies in the build context - this example just finds all files
# in the 'files' subfolder 
DEPS = $(shell find myfiles -type f -print)

# name of instance and other options you want to pass to docker run for testing
INSTANCE_NAME = mycontainer
RUN_OPTS =

#-----------------------------------------------------------------------------
# default target
#-----------------------------------------------------------------------------

all   : ## Build the container - this is the default action
all: build

#-----------------------------------------------------------------------------
# build container
#-----------------------------------------------------------------------------

.built: . $(DEPS)
	docker build -t $(CONTAINER_NAME) .
	@docker inspect -f '{{.Id}}' $(CONTAINER_NAME) > .built

build : ## build the container
build: .built
 
clean : ## delete the image from docker
clean: stop
	@$(RM) .built
	-docker rmi $(CONTAINER_NAME)

re    : ## clean and rebuild
re: clean all

#-----------------------------------------------------------------------------
# repository control
#-----------------------------------------------------------------------------

push  : ## Push container to remote repository
push: build
	docker push $(CONTAINER_NAME)

pull  : ## Pull container from remote repository - might speed up rebuilds
pull:
	docker pull $(CONTAINER_NAME)

#-----------------------------------------------------------------------------
# test container
#-----------------------------------------------------------------------------

run   : ## Run the container as a daemon locally for testing
run: build stop
	docker run -d --name=$(INSTANCE_NAME) $(RUN_OPTS) $(CONTAINER_NAME)

stop  : ## Stop local test started by run
stop:
	-docker stop $(INSTANCE_NAME)
	-docker rm $(INSTANCE_NAME)

#-----------------------------------------------------------------------------
# supporting targets
#-----------------------------------------------------------------------------

help  : ## Show this help.
	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'

.PHONY : all build clean re push pull run stop help