Merge pull request #42 from rtucek/upgrade/nginx-php-xdebug

General updates

Author: rtucek

Dockerfile

@@ -13,9 +13,9 @@ LABEL \
     org.label-schema.version=${VERSION}
 
 ENV \
-    NGINX_VERSION=1.11.13 \
-    PHP_VERSION=7.1.4 \
-    XDEBUG_VERSION=2.5.1 \
+    NGINX_VERSION=1.13.0 \
+    PHP_VERSION=7.1.5 \
+    XDEBUG_VERSION=2.5.4 \
     VERSION=${VERSION}
 
 COPY \