adding php-fpm user

Author: arianacosta

docker-sync.yml

@@ -6,4 +6,6 @@ syncs:
   applications-host-sync: # name of the sync volume
     src: '${APPLICATION}' # host source directory
     sync_strategy: 'native_osx' # native_osx is the default
-    sync_excludes: ['laradock', '.ignored_dot_folder']
+    sync_excludes: ['laradock', '.ignored_dot_folder'] # ignored directories
+    sync_user: www-data # php-fpm user should have permission to read the files
+    #sync_userid: 82