diff --git a/README.md b/README.md
index 70abff3..98de447 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,14 @@
      
 ### Docker
 
+Considering the current working directory is where your `docker-compose.yml` file is located:
+
 ```
-docker run --rm -it --name dcv -v $(pwd):/input pmsipilot/docker-compose-viz
+docker run --rm -it --name dcv -v $(pwd):/input pmsipilot/docker-compose-viz render -m image docker-compose.yml
 ```
 
+This will generate the `docker-compose.png` file in the current working directory.
+
 ### PHP
 
 Before you start, make sure you have: