Dockerfile

# Advanced Sentiment Analysis System
FROM python:3.10-slim

# Set working directory
WORKDIR /app

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

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

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

# Install Python dependencies
RUN pip install --upgrade pip && \
    pip install -r requirements.txt

# Copy application code
COPY . .

# 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=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:8000/health')" || exit 1

# Expose port
EXPOSE 8000

# Run command
CMD ["python", "-m", "jupyter", "notebook", "--ip=0.0.0.0", "--port=8000", "--no-browser", "--allow-root"]