FROM python:3.10-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    HF_HOME=/tmp/hf \
    TRANSFORMERS_CACHE=/tmp/hf \
    TOKENIZERS_PARALLELISM=false

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    libgomp1 \
  && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .

RUN pip install --no-cache-dir --upgrade pip \
  && pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu \
  && pip install --no-cache-dir -r requirements.txt

COPY . .

RUN mkdir -p /app/chroma_db \
  && chmod -R 777 /app

EXPOSE 7860

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