FROM python:3.12-slim

WORKDIR /app

# system deps (optional but safer for postgres later)
RUN apt-get update && apt-get install -y \
    gcc \
    && rm -rf /var/lib/apt/lists/*

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

COPY . .

EXPOSE 5000

ENV FLASK_APP=app.py
ENV FLASK_RUN_HOST=0.0.0.0

CMD ["python", "app.py"]