Close the external PostgreSQL port

docker-compose.yaml

@@ -39,8 +39,11 @@ services:
       - .env
     environment:
       PGUSER: postgres # needed for healthcheck.
-    ports:
+    # # If you need the network to be accessible from outside, please open the below port.
-      - "5432:5432"
+    # # Furthermore, please, please, please, change the username and password above.
+    # # If you want to enhance your security even more, create a new user for the database with a strong password.
+    # ports:
+    #   - "5432:5432"
     volumes:
       - postgres:/var/lib/postgresql/data
     healthcheck: *postgresdb-health