FROM python:3.9-slim

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

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

# Set working directory
WORKDIR /app

# Copy requirements first for better caching
COPY --chown=user ./requirements.txt requirements.txt

# Install dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir --user -r requirements.txt

# Copy application code
COPY --chown=user . /app

# Expose port (Hugging Face Spaces uses 7860)
EXPOSE 7860

# Run the application
CMD ["python", "app.py"]