From c691ee06f0537ebd67102838b200af71077034f6 Mon Sep 17 00:00:00 2001
From: Jovan Kostovski <chombium@gmail.com>
Date: Sat, 27 Jan 2018 00:02:48 +0100
Subject: [PATCH] show help and exit if no argument is provided

Signed-off-by: Jovan Kostovski <chombium@gmail.com>

bugfix for the case where the script was started without an argument.
The help was printed, but the _mainflux_docker was called as well, which
was causing the following error:
./mainflux-docker.sh: line 163: $1: unbound variable
---
 bin/mainflux-docker.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/bin/mainflux-docker.sh b/bin/mainflux-docker.sh
index baa1bd37..989ccc54 100755
--- a/bin/mainflux-docker.sh
+++ b/bin/mainflux-docker.sh
@@ -203,6 +203,7 @@ _main() {
   # No arguments provided
   if [[ $# -eq 0 ]] ; then
     _print_help
+    exit 1
   fi
 
   # Avoid complex option parsing when only one program option is expected.