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Dockerfile

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+FROM python:3.11-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1         PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y --no-install-recommends build-essential && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+ENV FLASK_APP=app.py
+RUN mkdir -p instance && chmod +x docker/entrypoint.sh
+
+HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD python -c "import requests; requests.get('http://127.0.0.1:5000/realtime/health', timeout=3).raise_for_status()"
+
+CMD ["docker/entrypoint.sh"]