From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Thu, 17 Jan 2019 02:03:28 +0000 (+0800)
Subject: FIX: Print usage when config is not passed to launcher.
X-Git-Url: https://vcs.fsf.org/?a=commitdiff_plain;h=f80e6a37a9d748f43047141b18986f6386444bc9;p=discourse_docker.git

FIX: Print usage when config is not passed to launcher.
---

diff --git a/launcher b/launcher
index 06588fd..dad89fc 100755
--- a/launcher
+++ b/launcher
@@ -55,6 +55,11 @@ while [ ${#} -gt 0 ]; do
   shift 1
 done
 
+if [[ -z $config ]]; then
+  usage
+  exit 1
+fi
+
 # Docker doesn't like uppercase characters, spaces or special characters, catch it now before we build everything out and then find out
 re='[[:upper:]/ !@#$%^&*()+~`=]'
 if [[ $config =~ $re ]];