compose.yml

services:
  db:
    image: postgres:18
    # I'll make these so that they won't restart automatically
    # so you guys won't accidentally have my solution running on your machines
    # for infinity :) If this was supposed to be used running on a production server,
    # you would probably want to set these to 'always' or 'unless-stopped'
    restart: no
    ports:
      - ${DATABASE_PORT}:5432
    volumes:
      - pgdata:/var/lib/postgresql
    env_file:
      - .env
    environment:
      POSTGRES_USER: ${DATABASE_USER}
      POSTGRES_PASSWORD: ${DATABASE_PASSWORD}
      POSTGRES_DB: ${DATABASE_NAME}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${DATABASE_USER} -d ${DATABASE_NAME}"]
      interval: 5s
      timeout: 5s
      retries: 5
  app:
    restart: no
    build:
      context: .
    depends_on:
      db:
        condition: service_healthy
    ports:
      - "${APP_PORT}:3000"
    env_file:
      - .env
    environment:
      DATABASE_HOST: db
    # For linux host machines to access host services from inside Docker containers.
    # A quick solution if you don't want to deal with Docker networking for now.
    extra_hosts:
      - "host.docker.internal:host-gateway"

volumes:
  pgdata:
    driver: local