Dockerfile

# Use Python 3.11 base image
FROM python:3.11-slim

# Create user for security (required by HF Spaces)
RUN useradd -m -u 1000 user

# Set working directory
WORKDIR /app

# Copy requirements first (better caching)
COPY --chown=user requirements.txt .

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

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

# Switch to non-root user (HF Spaces requirement)
USER user

# Set environment variables
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1

# Expose port 7860 (HF Spaces default)
EXPOSE 7860

# Start application
CMD ["python", "app.py"]