add Dockerfile

Dockerfile

@@ -0,0 +1,7 @@
+FROM python:3.12-slim
+RUN apt-get update && apt-get install -y --no-install-recommends docker.io \
+    && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+RUN pip install --no-cache-dir flask requests
+COPY app.py .
+CMD ["python", "app.py"]