FROM python:3.10-slim

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV TF_CPP_MIN_LOG_LEVEL=2

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

WORKDIR /home/user/app

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

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

# Copy application code
COPY --chown=user:user . .

# Expose port
EXPOSE 7860

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