This script will run PostgreSQL and pgAdmin using Docker.

docker-compose.yml

version: "3.5"

services:
  postgres:
    container_name: postgres_container
    image: postgres
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: suppliers
    volumes:
      - postgres:/var/lib/postgresql/data
    ports:
      - "5432:5432"
    networks:
      - postgres
    restart: unless-stopped

  pgadmin:
    container_name: pgadmin_container
    image: dpage/pgadmin4
    environment:
      PGADMIN_DEFAULT_EMAIL: 1234@admin.com
      PGADMIN_DEFAULT_PASSWORD: 1234
    volumes:
      - pgadmin:/var/lib/pgadmin
    ports:
      - "5050:80"
    networks:
      - postgres
    restart: unless-stopped

networks:
  postgres:
    driver: bridge

volumes:
  postgres:
  pgadmin: