docker-compose for PostgreSQL + PgAdmin

docker-compose-postgres.yml

version: "3.8"
services:

  # PostgeSQL server is running on localhost:8200
  postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: postgres
      POSTGRES_DB: CHANGE_ME
    ports:
      - 8200:5432
    volumes:
      - .data/postgres:/var/lib/postgresql # maps Dokers's /var/lib/postgresql folder into local .data/postgres folder

  # PgAdmin web panel is running on localhost:8201
  # Note: localhost:8200 will not work inside the Docker
  # To connect the PostgeSQL server use host.docker.internal:8200
  pgadmin:
    image: dpage/pgadmin4
    restart: unless-stopped
    depends_on:
      - postgres
    environment:
      PGADMIN_DEFAULT_EMAIL: admin@CHANGE_ME.com
      PGADMIN_DEFAULT_PASSWORD: admin
    ports:
      - 8201:80      
    volumes:
      - .data/pgadmin:/var/lib/pgadmin  # maps Dokers's /var/lib/pgadmin folder into local .data/pgadmin folder