Dockerfile

FROM python:3.12-slim

# Set working dir
WORKDIR /code

# Install system deps (for NLTK, etc.)
RUN apt-get update && apt-get install -y \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

# Pre-download NLTK resources
RUN python -m nltk.downloader punkt punkt_tab stopwords wordnet

# Copy app
COPY . .

# Expose port
EXPOSE 7860

# Run app
CMD ["python", "app.py"]