Docker Compose Generator

Generate a docker-compose.yml wiring up your app container with an optional PostgreSQL, MySQL, or MongoDB database and Redis, including named volumes.

App portDatabaseInclude Redis

docker-compose.yml

services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      - PORT=3000
      - DATABASE_URL=postgresql://app:changeme@postgres:5432/app
    depends_on:
      - postgres

  postgres:
    image: postgres:16-alpine
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_USER=app
      - POSTGRES_PASSWORD=changeme
      - POSTGRES_DB=app
    volumes:
      - postgres_data:/var/lib/postgresql/data

volumes:
  postgres_data:

Replace the placeholder passwords before using this anywhere beyond local development, and consider a .env file plus env_file: instead of inline values for real secrets.

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Frequently asked questions

Are the database passwords in the output safe to use?+

No, they're placeholders. Replace them before running anything beyond local development, ideally by loading secrets from a .env file instead of hardcoding them.

Why are named volumes used for the database?+

Without a volume, all database data would be lost every time the container is removed. The named volume persists data across container restarts and rebuilds.

Can I add more than one database?+

This tool generates one database service at a time; copy the relevant service block manually if you need more than one.