Golang Auto Build Versioning

golang-auto-build-versioning.md

go run -ldflags "-s \
  -X main.Version=1.0.2 \
  -X main.BuildTime=`TZ=UTC date -u '+%Y-%m-%dT%H:%M:%SZ'` \
  -X main.GitHash=`git rev-parse HEAD`" \
  myapp.go

Adopted from www.atatus.com

myapp.go

package main

import "fmt"

var (
	Version   = "undefined"
	BuildTime = "undefined"
	GitHash   = "undefined"
)

func main() {
	fmt.Printf("Version    : %s\n", Version)
	fmt.Printf("Git Hash   : %s\n", GitHash)
	fmt.Printf("Build Time : %s\n", BuildTime)
}