diff --git a/README.md b/README.md
index 42da412..e558d92 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,13 @@ sudo docker run --rm \
     -v /path/to/source:/src \
     -v /path/to/opengrok_data:/data \
     -p 8888:8080 \
+    --name opengrok \
     scue/docker-opengrok
 ```
 
-then, the search engine is available at `http://localhost:8888/`.
+then, the search engine is available at `http://localhost:8888/source`.
+
+update index:
+```
+docker exec opengrok /opengrok-0.12.1.5/bin/OpenGrok index /src
+```