FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 PYTHONDONTWRITEBYTECODE=1

WORKDIR /app

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

COPY . .

# Hugging Face Spaces usually provides $PORT (commonly 7860). Expose 7860 and
# default to 7860 at runtime using bash expansion when $PORT is not set.
EXPOSE 7860

CMD ["bash", "-c", "uvicorn app:app --host 0.0.0.0 --port ${PORT:-7860}"]