docker-compose.yml

services:
  # The PostgreSQL Database Service for production
  db:
    image: postgres:17-alpine
    container_name: production_db
    restart: unless-stopped
    environment:
      # --- IMPORTANT: You can change these credentials for your deployment ---
      - POSTGRES_USER=prod_user
      - POSTGRES_PASSWORD=a_very_strong_password
      - POSTGRES_DB=bankdb_prod
    volumes:
      # This persists the database data on your local machine.
      - postgres_prod_data:/var/lib/postgresql/data
    ports:
      # Optionally expose the database port to the host machine for debugging.
      - "5432:5432"

  # The Rust API Service, pulled from Docker Hub
  api:
    # This pulls your public image from Docker Hub.
    image: annondeveloper/tiny-bank-server:main
    container_name: production_api
    restart: unless-stopped
    ports:
      # Map port 3000 on your local machine to port 3000 in the container.
      - "3000:3000"
    environment:
      # These environment variables configure the running application.
      # The password here MUST match the POSTGRES_PASSWORD set for the 'db' service above.
      - APP_DATABASE_URL=postgres://prod_user:a_very_strong_password@db:5432/bankdb_prod
      # --- IMPORTANT: Change this to a secure, random string for production ---
      - APP_JWT_SECRET=your_super_secret_production_key_12345
      - RUST_LOG=info
    # This ensures the database container is started before the API starts.
    depends_on:
      - db

# Defines the named volume for persisting database data.
volumes:
  postgres_prod_data: