# Stage 1: Build Stage
FROM python:slim AS build
COPY requirements.txt .
RUN python -m venv /opt/venv && . /opt/venv/bin/activate && pip install --no-cache-dir -r requirements.txt

# Stage 2: Run Stage
FROM python:slim AS run
COPY --from=build /opt/venv /opt/venv
WORKDIR /app
COPY app /app
ENV PATH="/opt/venv/bin/:$PATH"
EXPOSE 80
CMD ["gunicorn", "--bind", "0.0.0.0:80", "app:app"]