add a Makefile for the operator

Signed-off-by: Moath Qasim <moad.qassem@gmail.com>

Makefile

@@ -0,0 +1,73 @@
+SHELL = /bin/bash -eu -o pipefail
+
+export GOPATH?=$(shell go env GOPATH)
+export CGO_ENABLED=0
+export GOPROXY?=https://proxy.golang.org
+export GO111MODULE=on
+export GOFLAGS?=-mod=readonly -trimpath
+export GIT_TAG ?= $(shell git tag --points-at HEAD)
+
+GO_VERSION = 1.20.1
+
+CMD = $(notdir $(wildcard ./cmd/*))
+BUILD_DEST ?= _build
+
+REGISTRY ?= docker.io
+REGISTRY_NAMESPACE ?= moadqassem
+
+IMAGE_TAG = \
+		$(shell echo $$(git rev-parse HEAD && if [[ -n $$(git status --porcelain) ]]; then echo '-dirty'; fi)|tr -d ' ')
+IMAGE_NAME ?= $(REGISTRY)/$(REGISTRY_NAMESPACE)/kubetink:$(IMAGE_TAG)
+
+BASE64_ENC = \
+		$(shell if base64 -w0 <(echo "") &> /dev/null; then echo "base64 -w0"; else echo "base64 -b0"; fi)
+
+.PHONY: lint
+lint:
+	@golangci-lint --version
+	golangci-lint run -v ./pkg/...
+
+.PHONY: vendor
+vendor: buildenv
+	go mod vendor
+
+.PHONY: buildenv
+buildenv:
+	@go version
+
+.PHONY: all
+all: build
+
+.PHONY: build
+build: $(CMD)
+
+.PHONY: $(CMD)
+$(CMD): %: $(BUILD_DEST)/%
+
+$(BUILD_DEST)/%: cmd/%
+	go build -v -o $@ ./cmd/$*
+
+.PHONY: clean
+clean:
+	rm -rf $(BUILD_DEST)
+	@echo "Cleaned $(BUILD_DEST)"
+
+.PHONY: docker-image
+docker-image:
+	docker build --build-arg GO_VERSION=$(GO_VERSION) -t $(IMAGE_NAME) .
+
+.PHONY: docker-image-publish
+docker-image-publish: docker-image
+	docker push $(IMAGE_NAME)
+	if [[ -n "$(GIT_TAG)" ]]; then \
+		$(eval IMAGE_TAG = $(GIT_TAG)) \
+		docker build -t $(IMAGE_NAME) . && \
+		docker push $(IMAGE_NAME) && \
+		$(eval IMAGE_TAG = latest) \
+		docker build -t $(IMAGE_NAME) . ;\
+		docker push $(IMAGE_NAME) ;\
+	fi
+
+.PHONY: shfmt
+shfmt:
+	shfmt -w -sr -i 2 hack