diff --git a/.env.example b/.env.example
index 8ca73b8..9dd7b97 100644
--- a/.env.example
+++ b/.env.example
@@ -1,2 +1 @@
 DOCLING_SERVE_ENABLE_UI=true
-PORT=5001
diff --git a/docker-compose.yml b/docker-compose.yml
index f82ac16..46686bd 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,8 +1,8 @@
 services:
   docling:
     image: quay.io/docling-project/docling-serve:latest
-    ports:
-      - "${PORT:-5001}:5001"
+    expose:
+      - "5001"
     environment:
       - DOCLING_SERVE_ENABLE_UI=${DOCLING_SERVE_ENABLE_UI:-true}
     healthcheck: