PostgreSQL + pgAdmin on Docker

docker-compose.yml

version: "3.9"

services:
  postgres:
    image: postgres:14.2-bullseye
    hostname: postgres
    container_name: postgres
    restart: always
    environment:
      POSTGRES_USER: test
      POSTGRES_PASSWORD: U6b_VHCyQ!
      TZ: "Asia/Tokyo"
    ports:
      - "5432:5432"
    networks:
      - backend
    volumes:
      - ./postgres/init.d:/docker-entrypoint-initdb.d
      - ./postgres/data:/var/lib/postgresql/data

  pgadmin4:
    image: dpage/pgadmin4:6.5
    hostname: pgadmin4
    container_name: pgadmin4
    restart: always
    depends_on:
      - postgres
    ports:
      - "18081:80"
    networks:
      - frontend
      - backend
    environment:
      PGADMIN_DEFAULT_EMAIL: pgadmin@pgadmin.internal
      PGADMIN_DEFAULT_PASSWORD: uR_d5hrf|s
    volumes:
      - pgadmin4:/var/lib/pgadmin

networks:
  frontend:
  backend:
    internal: true

volumes:
  pgadmin4: