handle failing scripts

Signed-off-by: Mattia Rizzolo <mapreri@ubuntu.com>

cron.sh

@@ -27,9 +27,8 @@ run_script() (
 
     # Execute the deploy script
     # Capture the output and print it only if the script fails
-    "$script" > "$output" 2>&1
-    ret=$?
-    if [[ "$ret" -ne 0 ]]; then
+    "$script" > "$output" 2>&1 || ret=$?
+    if [[ "${ret-0}" -ne 0 ]]; then
         echo "Deploy script $(basename "${script}") failed!"
         echo "Return code: $?"
         echo "Script output"