This docker compose file creates an empty Postgres database container and a pgAdmin container. You can connect to the database by specifying "database" as the host name in the pgAdmin UI along with the Postgres credentials listed in this compose file.

docker-compose.yml

version: '3.1'
services:
  postgresql:
    image: postgres:11-alpine
    container_name: database
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: test
      POSTGRES_DB: postgres
    ports:
      - "5432:5432"
    volumes:
      - ./postgres-data:/var/lib/postgresql/data
    networks:
      - db-net

  pgadmin4:
    image: dpage/pgadmin4:4.14
    container_name: pgadmin
    environment:
      PGADMIN_DEFAULT_EMAIL: admin@root.com
      PGADMIN_DEFAULT_PASSWORD: admin
    volumes:
      - ./pgadmin-data:/var/lib/pgadmin
    ports:
      - 80:80
    networks:
      - db-net

networks:
    db-net: