Merge pull request #17 from rtucek/nginx/v1.11.9

Bump up to Nginx v1.11.9

Author: rtucek

Dockerfile

@@ -1,7 +1,7 @@
 FROM debian:jessie
 
 ENV \
-    NGINX_VERSION=1.11.8 \
+    NGINX_VERSION=1.11.9 \
     PHP_VERSION=7.1.1 \
     XDEBUG_VERSION=2.5.0