diff --git a/README.md b/README.md
index 7e7f40a..c25aa56 100644
--- a/README.md
+++ b/README.md
@@ -20,11 +20,17 @@ Use a RaspberryPi to show a full-screen slideshow (Kiosk-mode)
 
 ![Obscreen Screenshot](https://github.com/jr-k/obscreen/blob/master/docs/screenshot.png  "Obscreen Screenshot")
 
-## Installation (docker)
+## Installation and configure (docker)
 ```bash
 git clone https://github.com/jr-k/obscreen.git
 cd obscreen
 cp .env.dist .env
+
+# be sure to have a valid file path for AUTOCONFIGURE_LX_FILE variable
+# you should use ./var/run/dummy if you don't care about monitor and just want to test
+nano .env
+
+# run
 docker compose up
 ```