version: '3.8'
services:
  psql:
    image: postgres:11-alpine
    container_name: postgres
    restart: always
    environment:
      POSTGRES_USER: testuser
      POSTGRES_PASSWORD: password
      POSTGRES_DB: testdb1
    volumes:
      - pgdata:/var/lib/postgresql/data
    expose:
      - 5432
    networks:
      - vault_net

networks:
  vault_net:
    name: vault_net

volumes:
  pgdata: