FROM python:3.11-slim

WORKDIR /app

# Install system deps
RUN apt-get update && apt-get install -y build-essential

# Set Hugging Face cache to writable path
ENV HF_HOME=/app/.cache

# Create the cache directory explicitly
RUN mkdir -p /app/.cache

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

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

# Copy app code
COPY . .

EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]