Update Dockerfile

Dockerfile

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+FROM python:3.11.9-slim
+
+WORKDIR /app
+
+RUN groupadd -r appgroup && useradd -r -m -g appgroup appuser
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+RUN chown -R appuser:appgroup /app
+
+EXPOSE 7860
+
+USER appuser
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/health')" || exit 1
+
+CMD ["python", "app.py"]