Makefile.common.in

# shared makefile for all images

# get image name from directory we're building
IMAGE_NAME=$(notdir $(CURDIR))
# docker image registry, default to upstream
REGISTRY?=kindest
# tag based on date-sha
TAG?=$(shell echo "$$(date +v%Y%m%d)-$$(git describe --always --dirty)")
# the full image tag
IMAGE?=$(REGISTRY)/$(IMAGE_NAME):$(TAG)

# required to enable buildx
export DOCKER_CLI_EXPERIMENTAL=enabled

# build with buildx
PLATFORMS?=linux/amd64,linux/arm64,linux/s390x
OUTPUT=
PROGRESS=auto
build: ensure-buildx
	docker buildx build --platform=${PLATFORMS} $(OUTPUT) --progress=$(PROGRESS) -t ${IMAGE} --pull .

# push the cross built image
push: OUTPUT=--push
push: build

# quick can be used to do a build that will be imported into the local docker 
# for sanity checking before doing a cross build push
# cross builds cannot be imported locally at the moment
# https://github.com/docker/buildx/issues/59
quick: PLATFORMS=linux/amd64
quick: OUTPUT=--load
quick: build

# enable buildx
ensure-buildx:
	./../../hack/build/init-buildx.sh

.PHONY: push build quick ensure-buildx