upd: entrypoint

Make sure the change the permissions to the var folder everytime we restart

bin/entrypoint.sh

@@ -2,5 +2,7 @@
 # Start the cron service in the background
 service cron start
 
+chown -R www-data:www-data /var/www/html/var
+
 # Execute the default Docker CMD (which starts Apache in the foreground)
 exec "$@"