FROM python:3.11-slim

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

# Create non-root user
RUN useradd -m -u 1000 appuser

# Set working directory
WORKDIR /app

RUN pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu
# Copy requirements first for caching
COPY 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=appuser:appuser app.py config.py ./

# Switch to non-root user
USER appuser

# Environment variables for HuggingFace Spaces
ENV PYTHONUNBUFFERED=1 \
    LFM_HOST=0.0.0.0 \
    LFM_PORT=7860

# Expose HuggingFace Spaces port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=300s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

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