postgresql simple docker compose

docker-compose.yml

#es
#configuring pod'es
version: '3.1'

services:

  db:
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: root
      POSTGRES_PASSWORD: peinsRoot123
      POSTGRES_DB: test_db_name
    network_mode: host
    volumes:
      - ./pgdata:/var/lib/postgresql/data