docker-compose.yml

services:
  db:
    image: postgres:16.13
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
    volumes:
      - db_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5

  web:
    build: .
    # wkhtmltopdf-binary ships a 32-bit x86 binary; arm64 hosts can't run i386
    # via multiarch (only amd64+i386 is a valid pairing), so force amd64 here.
    platform: linux/amd64
    command: bundle exec rails server -b 0.0.0.0
    volumes:
      - .:/app
    ports:
      - "3000:3000"
    environment:
      RAILS_ENV: development
      DATABASE_HOST: db
      DATABASE_USERNAME: postgres
      DATABASE_PASSWORD: postgres
    depends_on:
      db:
        condition: service_healthy
    stdin_open: true
    tty: true

  web_next:
    # Reuse the image built for `web` (compose tags it <project>-web, i.e.
    # audit-web) instead of building a second image. Only BUNDLE_GEMFILE
    # differs, so a separate build is unnecessary. (Not using `extends` here:
    # it merges array fields like `ports` instead of overriding them, which
    # would leak web's 3000:3000 mapping into this service too.)
    image: audit-web
    platform: linux/amd64
    # Distinct pidfile: web and web_next share the same bind-mounted /app, so
    # they'd otherwise race on tmp/pids/server.pid and refuse to boot together.
    command: bundle exec rails server -b 0.0.0.0 --pid tmp/pids/server_next.pid
    volumes:
      - .:/app
    ports:
      - "3001:3000"
    environment:
      RAILS_ENV: development
      DATABASE_HOST: db
      DATABASE_USERNAME: postgres
      DATABASE_PASSWORD: postgres
      BUNDLE_GEMFILE: Gemfile.next
    depends_on:
      db:
        condition: service_healthy
      web:
        condition: service_started
    stdin_open: true
    tty: true

volumes:
  db_data: