diff --git a/README.md b/README.md
index c186e2c..f055a35 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,11 @@ Needs `docker` and `docker-compose`
 xhost +"local:docker@"
 ```
 
-### Change your local user UID in the next line of `docker-compose.yml` for pulseaudio (default 1000)
-```
-- /run/user/[UID]/pulse:/run/user/1000/pulse
+### Add your local user UID and GID in the `.env` file:
+
+```bash
+echo "UID=${UID}" > .env
+echo "GID=${UID}" >> .env
 ```
 
 ### Execute with compose
@@ -21,4 +23,4 @@ docker-compose up -d
 
 ### License
 
-MIT
\ No newline at end of file
+MIT
diff --git a/docker-compose.yml b/docker-compose.yml
index a4da126..7946692 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -16,5 +16,5 @@ services:
       - PULSE_SERVER=unix:/run/user/1000/pulse/native
     volumes:
       - /tmp/.X11-unix:/tmp/.X11-unix:ro
-      - /run/user/1000/pulse:/run/user/1000/pulse
+      - /run/user/${UID:-1000}/pulse:/run/user/${UID:-1000}/pulse
       - ./wahay/pulseaudio.client.conf:/etc/pulse/client.conf:ro