FROM python:3.9-slim

# Install system dependencies if needed (e.g., for sqlite/libsql)
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

WORKDIR /app

# Copy dependency file first for caching
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy the rest of the application
COPY --chown=user . /app

# The FastAPI app is in main.py, object is 'app'
# Using port 7860 for Hugging Face Spaces compatibility
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]