feat: backend FastAPI Smart App City — auth JWT, IoT, GIS, notifications, reporting

smart-app-city/backend/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ .
+
+RUN useradd -m appuser && chown -R appuser:appuser /app
+
+USER appuser
+
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]