Dockerfile

# Use Python 3.11 slim image for better performance and smaller size
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONPATH=/app

# Install system dependencies required for ML libraries and PDF processing
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    build-essential \
    curl \
    && 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 the entire project
COPY . .

# Create data directory for file uploads
RUN mkdir -p /app/data

# Create logs directory
RUN mkdir -p /app/logs

# Set proper permissions
RUN chmod -R 755 /app

# Expose the port that FastAPI runs on
EXPOSE 8000

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

# Default command to run the FastAPI backend
CMD ["python", "-m", "uvicorn", "backend.app:app", "--host", "0.0.0.0", "--port", "8000"]