# Dockerfile for Anthropic Topic Segmentation Microservice
# Optimized for HuggingFace Spaces deployment

FROM python:3.11-slim

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    DEBIAN_FRONTEND=noninteractive

# Set working directory
WORKDIR /app

# Install system dependencies (minimal + build tools for psutil)
RUN apt-get update && apt-get install -y \
    --no-install-recommends \
    curl \
    gcc \
    python3-dev \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

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

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

# Copy application code
COPY . .

# Make startup script executable
RUN chmod +x start.sh

# Create non-root user for security
RUN useradd --create-home --shell /bin/bash app \
    && chown -R app:app /app
USER app

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=15s --retries=3 \
    CMD curl -f http://localhost:7860/ || exit 1

# Expose port (HuggingFace Spaces uses 7860)
EXPOSE 7860

# Start command optimized for HuggingFace Spaces
CMD ["./start.sh"]