# Use official Python 3.10 slim image
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install basic compiler tools (retained just in case other packages need it)
RUN apt-get update && apt-get install -y \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

# Pre-download only the small SentenceTransformer embedding model (~90MB)
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('all-MiniLM-L6-v2')"

# Copy application files (excluding RAG database)
COPY . .

# Expose port 7860
EXPOSE 7860

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