[trivial] pass ldflags for version build (#27)

Author: jotak

Makefile

@@ -43,7 +43,7 @@ verify: lint test
 .PHONY: build
 build:
 	@echo "### Building"
-	go build -mod vendor -o goflow-kube cmd/goflow-kube.go
+	go build -ldflags "-X main.version=${VERSION}" -mod vendor -o goflow-kube cmd/goflow-kube.go
 
 .PHONY: image
 image:

cmd/goflow-kube.go

@@ -26,10 +26,10 @@ import (
 
 const netflowScheme = "netflow"
 const legacyScheme = "nfl"
+const app = "goflow-kube"
 
 var (
 	version        = "unknown"
-	app            = "goflow-kube"
 	mainConfigPath = flag.String("config", "", "absolute path to the main configuration file")
 	kubeConfigPath = flag.String("kubeconfig", "", "absolute path to a kubeconfig file for advanced kube client configuration")
 	logLevel       = flag.String("loglevel", "info", "log level")