Dockerfile

FROM python:3.11-slim

WORKDIR /app

# Install system dependencies (including for ML libraries)
RUN apt-get update && apt-get install -y \
    git \
    curl \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (for better Docker layer 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 app/ ./app/

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

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:${PORT:-8000}/health || exit 1

# Start command
CMD ["/bin/sh", "-c", "uvicorn app.main:app --host 0.0.0.0 --port ${PORT}"]