added explanations in wordpress entrypoint

srcs/requirements/wordpress/conf/wp_entrypoint.sh

@@ -76,5 +76,9 @@ else
 fi
 
 
+# exec php-fpm7 -FR
+# php-fpm7 --help :
+#   -F, --nodaemonize : force to stay in foreground, and ignore daemonize option from config file
+#		-R, --allow-to-run-as-root :  Allow pool to run as root (disabled by default)
 exec "${PHP_VERSION}" -FR