FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better layer caching
COPY requirements.txt .

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

# Copy application code
COPY . .

# Create non-root user (HF Spaces requirement)
RUN useradd -m -u 1000 user

# Change ownership to user
RUN chown -R user:user /app

# Switch to non-root user
USER user

# Expose port 7860 (HF Spaces default)
EXPOSE 7860

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

# Health check
HEALTHCHECK CMD curl --fail http://localhost:7860/_stcore/health

# Run Streamlit
CMD ["streamlit", "run", "streamlit_app.py", "--server.port=7860", "--server.address=0.0.0.0"]