add docker version

docker/php-fpm/xhprof.ini

@@ -0,0 +1,8 @@
+[xhprof]
+; extension=xhprof.so
+extension=tideways_xhprof.so
+xhprof.output_dir=/var/www/xhprof
+; no need to autoload, control in the program
+tideways.auto_prepend_library=0
+; set default rate
+tideways.sample_rate=100