simple docker setup

docker-compose

version: "3.8"
services:
  phoenix:
    build: .
    volumes:
      - ./src:/app
    ports:
      - "4000:4000"
    depends_on:
      - postgres

  postgres:
    image: postgres
    volumes:
      - db-data0:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: docker_test_dev
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: postgres

volumes:
  db-data0: