Makefile

# based on https://github.com/microscaling/microscaling/blob/master/Makefile
# example given at https://microbadger.com/labels
#
default: build

# Build Docker image
build: docker_build output

# Build and push Docker image
release: docker_build docker_push output

# Image and binary can be overidden with env vars.
DOCKER_IMAGE ?= metabrainz/docker-openresty

# Get the latest commit.
GIT_COMMIT = $(strip $(shell git rev-parse --short HEAD))

# Get the version number from the code
CODE_VERSION = $(strip $(shell cat VERSION))
ifeq (x$(CODE_VERSION),x)
$(error You need to create a VERSION file to build a release)
endif

# Find out if the working directory is clean
GIT_NOT_CLEAN_CHECK = $(shell git status --porcelain)
ifneq (x$(GIT_NOT_CLEAN_CHECK), x)
DOCKER_TAG_SUFFIX = -dirty
endif

# If we're releasing to Docker Hub, and we're going to mark it with the latest tag, it should exactly match a version release
ifeq ($(MAKECMDGOALS),release)

# Test if a tag exists
TAGGED = $(strip $(shell git rev-parse "$(CODE_VERSION)" >/dev/null 2>&1 && echo "ok"))
ifneq (x$(TAGGED), xok)
$(error echo No matching tag: $(CODE_VERSION))
endif

# See what commit is tagged to match the version
VERSION_COMMIT = $(strip $(shell git rev-list "$(CODE_VERSION)" -n 1 | cut -c1-7))
ifneq ($(VERSION_COMMIT), $(GIT_COMMIT))
$(error echo You are trying to push a build based on commit $(GIT_COMMIT) but the tagged release version is $(VERSION_COMMIT))
endif

# Don't push to Docker Hub if this isn't a clean repo
ifneq (x$(GIT_NOT_CLEAN_CHECK), x)
$(error echo You are trying to release a build based on a dirty repo)
endif

# Use the version number as the release tag.
DOCKER_TAG = $(CODE_VERSION)

else
# Add the commit ref for development builds. Mark as dirty if the working directory isn't clean
DOCKER_TAG = $(CODE_VERSION)-$(GIT_COMMIT)$(DOCKER_TAG_SUFFIX)
endif

docker_build: 
	# Build Docker image
	DOCKER_BUILDKIT=0 docker buildx build \
	--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
	--build-arg VERSION=$(CODE_VERSION) \
	--build-arg VCS_URL=`git config --get remote.origin.url` \
	--build-arg VCS_REF=$(GIT_COMMIT) \
	--build-arg RESTY_J=`nproc` \
	--progress=plain \
	-t $(DOCKER_IMAGE):$(DOCKER_TAG) .

docker_push:
	# Push to DockerHub
	docker push $(DOCKER_IMAGE):$(DOCKER_TAG)

output:
	@echo Docker Image: $(DOCKER_IMAGE):$(DOCKER_TAG)