[fix] use expose to remove conflict

docker-compose.yml

@@ -2,8 +2,8 @@ services:
   temp-site:
     image: nginx:alpine
     restart: unless-stopped
-    ports:
-      - "80:80"
+    expose:
+      - "80"
     volumes:
       - ./index.html:/usr/share/nginx/html/index.html:ro
       - ./assets:/usr/share/nginx/html/assets:ro