update Makefile add the help print information.

Makefile

@@ -22,52 +22,65 @@ OUTPUT_GOFLOW_LIGHT_NF    := $(DIST_DIR)goflow-netflow-$(GOFLOW_VERSION)-$(GOOS)
 OUTPUT_GOFLOW_LIGHT_NFV5  := $(DIST_DIR)goflow-nflegacy-$(GOFLOW_VERSION)-$(GOOS)-$(ARCH)$(EXTENSION)
 
 .PHONY: all
-all: test-race vet test
+all: test-race vet test ## Run all tests and checks.
+
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+##@ Development
+
+.PHONY: fmt
+fmt: ## Run go fmt against code.
+	go fmt ./...
+
+.PHONY: vet
+
 
 .PHONY: proto
 proto:
 	@echo generating protobuf
 	protoc --go_out=. --plugin=$(PROTOCPATH)protoc-gen-go pb/*.proto
 
 .PHONY: test
-test:
+test: ## Run unit tests.
 	@echo testing code
 	go test ./...
 
 .PHONY: vet
-vet:
+vet: ## Run go vet to check for potential issues.
 	@echo checking code is vetted
 	go vet $(shell go list ./...)
 
 .PHONY: test-race
-test-race:
+test-race: ## Run tests with race condition detection.
 	@echo testing code for races
 	go test -race ./...
 
 .PHONY: prepare
-prepare:
+prepare: ## Prepare necessary directories for build output.
 	mkdir -p $(DIST_DIR)
 
 .PHONY: clean
-clean:
+clean: ## Clean build artifacts.
 	rm -rf $(DIST_DIR)
 
 .PHONY: build-goflow
-build-goflow: prepare
+build-goflow: prepare ## Build the goflow binary.
 	go build -ldflags $(LDFLAGS) -o $(OUTPUT_GOFLOW) cmd/goflow/goflow.go
 
+.PHONY: docker-goflow
+docker-goflow: ## Build the Docker image for goflow.
+	docker build -t $(DOCKER_REPO)$(GOFLOW_NAME):$(GOFLOW_VERSION) --build-arg LDFLAGS=$(LDFLAGS) -f Dockerfile .
+
 .PHONY: build-goflow-light
-build-goflow-light: prepare
+build-goflow-light: prepare ## Build the lightweight goflow binaries.
 	go build -ldflags $(LDFLAGS) -o $(OUTPUT_GOFLOW_LIGHT_SFLOW) cmd/csflow/csflow.go
 	go build -ldflags $(LDFLAGS) -o $(OUTPUT_GOFLOW_LIGHT_NF) cmd/cnetflow/cnetflow.go
 	go build -ldflags $(LDFLAGS) -o $(OUTPUT_GOFLOW_LIGHT_NFV5) cmd/cnflegacy/cnflegacy.go
 
-.PHONY: docker-goflow
-docker-goflow:
-	docker build -t $(DOCKER_REPO)$(GOFLOW_NAME):$(GOFLOW_VERSION) --build-arg LDFLAGS=$(LDFLAGS) -f Dockerfile .
-
 .PHONY: package-deb-goflow
-package-deb-goflow: prepare
+package-deb-goflow: prepare ## Package goflow as a Debian package.
 	fpm -s dir -t deb -n $(GOFLOW_NAME) -v $(VERSION_PKG) \
         --description "$(DESCRIPTION)"  \
         --url "$(URL)" \
@@ -80,7 +93,7 @@ package-deb-goflow: prepare
         package/goflow.env=/etc/default/goflow
 
 .PHONY: package-rpm-goflow
-package-rpm-goflow: prepare
+package-rpm-goflow: prepare ## Package goflow as an RPM package.
 	fpm -s dir -t rpm -n $(GOFLOW_NAME) -v $(VERSION_PKG) \
         --description "$(DESCRIPTION)" \
         --url "$(URL)" \