From db6e2b10c3500cbcb20e522580fb8d6558f9fd1b Mon Sep 17 00:00:00 2001
From: Kieren Evans <kevans@inviqa.com>
Date: Thu, 23 Mar 2017 13:22:16 +0000
Subject: [PATCH] Error and quit if an unset variable is used in functions.

Helps avoid `rm -rf ${VAR}/*` wiping /* if $VAR is not set, as it could wipe out mountpoints.
---
 ubuntu/16.04/usr/local/bin/container | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ubuntu/16.04/usr/local/bin/container b/ubuntu/16.04/usr/local/bin/container
index cbbd2b31..bf3e964e 100755
--- a/ubuntu/16.04/usr/local/bin/container
+++ b/ubuntu/16.04/usr/local/bin/container
@@ -1,5 +1,5 @@
 #!/bin/bash
-set -e
+set -e -u
 
 TASK=$1
 ARGS=( "$@" )
@@ -28,4 +28,4 @@ fi
 set -- "${ARGS[@]}"
 shift 1
 
-"do_$TASK" "$@"
\ No newline at end of file
+"do_$TASK" "$@"