Merge pull request #1505 from mapk0y/fix_compose_typo

fix typo in docker-compose.yml

docker-compose.yml

@@ -10,7 +10,7 @@ rocketchat:
 # volumes:
 #    - ./uploads:/app/uploads
   environment:
-    - ROOT=3000
+    - PORT=3000
     - ROOT_URL=http://yourhost:3000
     - MONGO_URL=mongodb://mongo:27017/rocketchat
 # uncomment and set the line below if you need to support mobile apps