Makefile

REGISTRY ?= ghcr.io
USERNAME ?= siderolabs
SHA ?= $(shell git describe --match=none --always --abbrev=8 --dirty)
TAG ?= $(shell git describe --tag --always --dirty)
BRANCH ?= $(shell git rev-parse --abbrev-ref HEAD)
REGISTRY_AND_USERNAME := $(REGISTRY)/$(USERNAME)
NAME := kubelet
KUBELET_VER := v1.32.1
KUBELET_SHA512_AMD64 := 66e1194d1ef2886bd30a0617a938732af1b5e9f70fcf5607e178c9b4431935bfada519f70cc17857ed93792dff479eac2574f0d950778f82f4443706234da235
KUBELET_SHA512_ARM64 := a4a09b8789d973435b2523215c9b2719188e197d6bade84d2a0051e0471cb6f477b069afb471059c7b8d9c088f5f777dfad7ae0e10de184290f9f876d7690161

# For kubelet versions >= 1.31.0, the slim image is the default one, and previous image is labeled as -fat.
# For kubelet versions < 1.31.0, the fat image is the default one, and previous image is labeled as -slim.
USE_SLIM := $(shell (printf "%s\n" "$(KUBELET_VER)" "v1.30.99" | sort -V -C) && echo false || echo true)

ifeq ($(USE_SLIM),true)
	SLIM_TAG_SUFFIX :=
	FAT_TAG_SUFFIX := -fat
else
	SLIM_TAG_SUFFIX := -slim
	FAT_TAG_SUFFIX :=
endif

BUILD := docker buildx build
PLATFORM ?= linux/amd64,linux/arm64
PROGRESS ?= auto
PUSH ?= false
COMMON_ARGS := --file=Dockerfile
COMMON_ARGS += --progress=$(PROGRESS)
COMMON_ARGS += --platform=$(PLATFORM)
COMMON_ARGS += --provenance=false
COMMON_ARGS += --build-arg=REGISTRY_AND_USERNAME=$(REGISTRY_AND_USERNAME)
COMMON_ARGS += --build-arg=NAME=$(NAME)
COMMON_ARGS += --build-arg=TAG=$(TAG)
COMMON_ARGS += --build-arg=KUBELET_VER=$(KUBELET_VER)
COMMON_ARGS += --build-arg=KUBELET_SHA512_AMD64=$(KUBELET_SHA512_AMD64)
COMMON_ARGS += --build-arg=KUBELET_SHA512_ARM64=$(KUBELET_SHA512_ARM64)

KRES_IMAGE ?= ghcr.io/siderolabs/kres:latest

all: container

target-%: ## Builds the specified target defined in the Dockerfile. The build result will remain only in the build cache.
	@$(BUILD) \
		--target=$* \
		$(COMMON_ARGS) \
		$(TARGET_ARGS) .

local-%: ## Builds the specified target defined in the Dockerfile using the local output type. The build result will be output to the specified local destination.
	@$(MAKE) target-$* TARGET_ARGS="--output=type=local,dest=$(DEST) $(TARGET_ARGS)"

docker-%: ## Builds the specified target defined in the Dockerfile using the default output type.
	@$(MAKE) target-$*-fat TARGET_ARGS="--tag $(REGISTRY_AND_USERNAME)/$(NAME):$(TAG)$(FAT_TAG_SUFFIX) $(TARGET_ARGS)"
	@$(MAKE) target-$*-slim TARGET_ARGS="--tag $(REGISTRY_AND_USERNAME)/$(NAME):$(TAG)$(SLIM_TAG_SUFFIX) $(TARGET_ARGS)"

.PHONY: container
container:
	@$(MAKE) docker-$@ TARGET_ARGS="--push=$(PUSH)"

.PHONY: update-sha
update-sha: update-sha-amd64 update-sha-arm64 ## Updates the kubelet sha512 checksums in the Makefile.

update-sha-%:
	sha512=`curl -sL https://dl.k8s.io/release/$(KUBELET_VER)/bin/linux/${*}/kubelet.sha512`; \
		sed -i "s/KUBELET_SHA512_$(shell echo '$*' | tr '[:lower:]' '[:upper:]') := .*/KUBELET_SHA512_$(shell echo '$*' | tr '[:lower:]' '[:upper:]') := $${sha512}/" Makefile

.PHONY: rekres
rekres:
	@docker pull $(KRES_IMAGE)
	@docker run --rm --net=host --user $(shell id -u):$(shell id -g) -v $(PWD):/src -w /src -e GITHUB_TOKEN $(KRES_IMAGE)