Help makefile with header section

[rjshrjndrn]

##@ Docker

# To flag when the working copy had changes, use GIT_REV. To just use
# the latest commit hash, use GIT_SHA.
docker-build-dev: ## builds image
	docker build -t $(dev_image) --platform linux/amd64 --build-arg GIT_SHA=$(GIT_REV) .
docker-build-prod: ## builds image
	docker build -t $(prod_image) --platform linux/amd64 --build-arg GIT_SHA=$(GIT_REV) .

##@ Local dev

build: ## builds binary
	go build -ldflags "-s -w -X main.BuildVersion=$(GIT_REV)" cmd/cloud-manager/main.go

[rjshrjndrn]

Hi @rafamadriz Can you please review ?