FROM python:3.10-slim

WORKDIR /app

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

# Download NLTK data required by preprocessing
RUN python -c "import nltk; nltk.download('stopwords', quiet=True); nltk.download('punkt', quiet=True); nltk.download('wordnet', quiet=True)"

# Copy app code
COPY . .

# Expose port
EXPOSE 8000

# Start Uvicorn
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]