diff --git a/README.md b/README.md
index a7470d6..80ee175 100644
--- a/README.md
+++ b/README.md
@@ -56,8 +56,15 @@ using the same data directory.
 
 ### How to start a GeoServer without sample data?
 
-This image populates GeoServer with demo data by default. For production scenarios this is typically not desired.
-The environment variable `SKIP_DEMO_DATA` can be set to `true` to create an empty GeoServer.
+This image populates ``/opt/geoserver_data/`` with demo data by default. For production scenarios this is typically not desired.
+
+The environment variable `SKIP_DEMO_DATA` can be set to `true` to create an empty data directory.
+
+```
+docker run -it -p 80:8080 \
+  --env SKIP_DEMO_DATA=true \
+  docker.osgeo.org/geoserver:2.21.1
+```
 
 ### How to download and install additional extensions on startup?