# AlphaEngine API — suitable for Render, Fly.io, Railway, etc.
FROM python:3.12-slim-bookworm

WORKDIR /app

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

COPY requirements.txt .
RUN pip install -r requirements.txt \
    && pip install --index-url https://download.pytorch.org/whl/cpu torch==2.3.0

COPY . .

EXPOSE 8000

# Respect platform-provided PORT (Render) while defaulting to 8000 locally.
CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT:-8000}"]