From e5be20d719418bf3c9c433f5c86687e08647177d Mon Sep 17 00:00:00 2001
From: Quentin McGaw <quentin.mcgaw@gmail.com>
Date: Wed, 14 Sep 2022 13:23:31 +0000
Subject: [PATCH] fix(exit): exit with `0` on successful shutdown

---
 cmd/gluetun/main.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cmd/gluetun/main.go b/cmd/gluetun/main.go
index f98e8326d..3fde74c0a 100644
--- a/cmd/gluetun/main.go
+++ b/cmd/gluetun/main.go
@@ -108,11 +108,15 @@ func main() {
 	const shutdownGracePeriod = 5 * time.Second
 	timer := time.NewTimer(shutdownGracePeriod)
 	select {
-	case <-errorCh:
+	case err := <-errorCh:
 		if !timer.Stop() {
 			<-timer.C
 		}
-		logger.Info("Shutdown successful")
+		if err == nil {
+			logger.Info("Shutdown successful")
+			os.Exit(0)
+		}
+		logger.Warnf("Shutdown not completed gracefully: %s", err)
 	case <-timer.C:
 		logger.Warn("Shutdown timed out")
 	case signal := <-signalCh: