# ---- Build stage (optional) ----
FROM python:3.12-slim AS builder
WORKDIR /app
COPY requirements.txt .
RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt

# ---- Runtime stage ----
FROM python:3.12-slim
WORKDIR /app
COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
COPY app ./app
EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--port", "8000"]