add build script for add version automaticly

Author: moutonjeremy

build.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+set -x
+
+VERSION=`git branch | grep '*' | awk '{print $2}'`
+if [[ $VERSION == "master" ]];
+then
+  VERSION=`git describe --tags --abbrev=0`
+fi
+
+CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags="-X 'main.version=$VERSION'"  -o bin/app