VOL-2126 - update version information in dockerfile

Change-Id: I8ae4f097184286c2cc8c5a2bb0e4d86335a83090
diff --git a/cmd/simulated_onu/main.go b/cmd/simulated_onu/main.go
index caa29c0..cbcf44f 100644
--- a/cmd/simulated_onu/main.go
+++ b/cmd/simulated_onu/main.go
@@ -329,6 +329,11 @@
 	cf := config.NewAdapterFlags()
 	cf.ParseCommandArguments()
 
+	if cf.PrintVersion {
+		fmt.Println(version.VersionInfo.String(""))
+		return
+	}
+
 	//// Setup logging
 
 	//Setup default logger - applies for packages that do not have specific logger set