# Copyright 2021 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Container image for nginx-errors.

# set default shell
SHELL=/bin/bash -o pipefail -o errexit

DIR:=$(strip $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST)))))
INIT_BUILDX=$(DIR)/../../hack/init-buildx.sh

TAG ?=v$(shell date +%m%d%Y)-$(shell git rev-parse --short HEAD)
REGISTRY ?= local

IMAGE = $(REGISTRY)/nginx-errors

# required to enable buildx
export DOCKER_CLI_EXPERIMENTAL=enabled

# build with buildx
PLATFORMS?=linux/amd64
OUTPUT=
PROGRESS=plain

build: ensure-buildx
	docker buildx build \
		--platform=${PLATFORMS} $(OUTPUT) \
		--progress=$(PROGRESS) \
		--pull \
		-t $(IMAGE):$(TAG) rootfs

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

# enable buildx
ensure-buildx:
# this is required for cloudbuild
ifeq ("$(wildcard $(INIT_BUILDX))","")
	@curl -sSL https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/hack/init-buildx.sh | bash
else
	@exec $(INIT_BUILDX)
endif
	@echo "done"

.PHONY: build push ensure-buildx