Change docker image dist so that prevent unit test error in PHP 5.3

dailycoding · dailycoding · commit ab8d8291d25f · 2018-02-05T19:07:07.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: php
+dist: precise
 php:
   - 5.6
   - 5.5
