add debug

Sebastien Malot · Sebastien Malot · commit cd52fdc3019a · 2017-09-20T11:31:25.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,10 @@
+sudo: required
+
 language: php
 
+services:
+  - docker
+
 php:
   - 5.6
   - 7.0
