diff --git a/portainer/readme.md b/portainer/readme.md
index 01af9f7..4675675 100644
--- a/portainer/readme.md
+++ b/portainer/readme.md
@@ -33,11 +33,10 @@ services:
     hostname: portainer
     command: -H unix:///var/run/docker.sock
     restart: unless-stopped
+    env_file: .env
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
       - ./portainer_data:/data
-    environment:
-      - TZ
 
 networks:
   default: