Moving version from variable to text file

build/VERSION

@@ -0,0 +1 @@
+0.7.0

cmd/version.go

@@ -17,14 +17,20 @@ limitations under the License.
 package cmd
 
 import (
+	"os"
+
 	"fmt"
 
 	"github.com/spf13/cobra"
+
+	"io/ioutil"
+
+	"strings"
 )
 
 var (
 	// VERSION  is version number that wil be displayed when running ./kompose version
-	VERSION = "0.7.0"
+	VERSION string
 	// GITCOMMIT is hash of the commit that wil be displayed when running ./kompose version
 	// this will be overwritten when running  build like this: go build -ldflags="-X github.com/kubernetes/kompose/cmd.GITCOMMIT=$(GITCOMMIT)"
 	// HEAD is default indicating that this was not set during build
@@ -41,5 +47,9 @@ var versionCmd = &cobra.Command{
 }
 
 func init() {
+	gopath := os.Getenv("GOPATH")
+	path := gopath + "/src/github.com/kubernetes/kompose/build/VERSION"
+	version, _ := ioutil.ReadFile(path)
+	VERSION = strings.TrimSpace(string(version))
 	RootCmd.AddCommand(versionCmd)
 }