FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 \
    PORT=7860

WORKDIR /app

COPY requirements.txt .

RUN pip install --no-cache-dir --index-url https://download.pytorch.org/whl/cpu torch==2.5.1 && \
    pip install --no-cache-dir -r requirements.txt

COPY . .

RUN mkdir -p /app/static

EXPOSE 7860

HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD python -c "import os, urllib.request; urllib.request.urlopen(f'http://localhost:{os.environ.get(\"PORT\", \"7860\")}/')" || exit 1

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