FROM python:3.10-slim

ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PIP_NO_CACHE_DIR=1

WORKDIR /app

# System deps (FAISS / torch runtime deps)
RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Install Python deps
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt

# Copy app code + assets (faiss.index + metadata)
COPY . .

# Hugging Face Spaces uses PORT env var sometimes; default to 7860
ENV PORT=7860
EXPOSE 7860

# Start FastAPI
CMD ["bash", "-lc", "uvicorn app:app --host 0.0.0.0 --port ${PORT}"]