Make sure the tool throws an error if anything fails

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"time"
@@ -40,15 +41,21 @@ func main() {
 	namespaces, err := getNamespaces(namespaceList)
 	checkErr(err)
 
+	failed := false
 	for _, ns := range namespaces {
 		fmt.Printf("Updating secret [%s] in namespace [%s]... ", name, ns)
 		err = updatePassword(name, username, password, server, ns)
 		if nil != err {
 			fmt.Printf("failed: %s\n", err)
+			failed = true
 		} else {
 			fmt.Println("success")
 		}
 	}
 
+	if failed {
+		panic(errors.New("failed to create one of more Docker login secrets"))
+	}
+
 	fmt.Println("Job complete.")
 }