Added port mappings to db

docker-compose.yml

@@ -24,6 +24,8 @@ services:
       driver: journald
     volumes:
       - ${DB_PATH}:/app/data
+    ports:
+      - 127.0.0.1:5432:5432
     environment:
       - POSTGRES_PASSWORD=${PG_PASSWD}
       - POSTGRES_USER=${PG_USER}