FROM python:3.11-slim

# Prevents Python from writing .pyc files & enables unbuffered logs
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

ENV HF_HOME=/tmp
ENV HUGGINGFACE_HUB_CACHE=/tmp/hub
ENV TRANSFORMERS_CACHE=/tmp/transformers

# System deps (Pillow/libjpeg/png)
RUN apt-get update && apt-get install -y --no-install-recommends \
    libjpeg62-turbo-dev zlib1g-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /code

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

COPY app.py .

# HF sets $PORT; default to 7860
ENV PORT=7860

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