FROM python:3.11-slim

# Prevent Python from writing pyc files
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set working directory
WORKDIR /app

# Install system dependencies (important for chroma + sqlite)
RUN apt-get update && apt-get install -y \
    build-essential \
    sqlite3 \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (better caching)
COPY requirements.txt .

RUN pip install --no-cache-dir -r requirements.txt

# Copy project files
COPY . .

# Expose port (Hugging Face uses 7860)
EXPOSE 7860

# Start FastAPI with uvicorn
CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "7860"]