# ── Hugging Face Spaces — Docker SDK ─────────────────────────────────────────
# Base image: Python 3.10 slim
FROM python:3.10-slim

# HF Spaces requires a non-root user
RUN useradd -m -u 1000 user
USER user

ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR $HOME/app

# Install dependencies first (cached layer — only re-runs when requirements change)
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Pre-download the embedding model at build time so startup is instant
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('sentence-transformers/all-MiniLM-L6-v2')"

# Copy all project files
COPY --chown=user . .

# Create required runtime directories
RUN mkdir -p faiss_index uploads

# HF Spaces expects port 7860
ENV PORT=7860

# Start the server
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]