diff --git a/Dockerfile b/Dockerfile
index 2610e040..641a0c1a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,7 @@ LABEL maintainer="aichy@sf.com"
 
 ARG GOPROXY
 ENV GOPROXY ${GOPROXY:-direct}
+# ENV GOPROXY=https://goproxy.io,direct
 
 ENV GOPATH /go
 ENV GOROOT /usr/local/go
diff --git a/cmd/main.go b/cmd/main.go
index 9f1f2cc8..192832ad 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -1,6 +1,7 @@
 package answercmd
 
 import (
+	"fmt"
 	"os"
 	"time"
 
@@ -56,6 +57,7 @@ func runApp() {
 	constant.Version = Version
 	constant.Revision = Revision
 	schema.AppStartTime = time.Now()
+	fmt.Println("answer Version:", constant.Version, " Revision:", constant.Revision)
 
 	defer cleanup()
 	if err := app.Run(); err != nil {