services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      GEMINI_API_KEY: ${GEMINI_API_KEY:?set GEMINI_API_KEY in .env}
      GEMINI_MODEL: ${GEMINI_MODEL:-gemini-3.6-flash}
    volumes:
      # The UI is read from disk per request, so this makes it editable live.
      - ./static:/app/static:ro
    # Compose pulls the model, starts Model Runner, and hands the app
    # the endpoint and the model name. No docker model pull by hand.
    models:
      gemma:
        endpoint_var: LOCAL_AI_URL
        model_var: LOCAL_AI_MODEL

models:
  gemma:
    model: ai/gemma3:1B-Q4_K_M
    # The prompts in this demo are tiny; no reason to reserve 128k.
    context_size: 2048