feat：add Dockerfile for containerization

Dockerfile

@@ -0,0 +1,20 @@
+FROM python:3.10
+
+WORKDIR /app
+
+COPY . /app
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+EXPOSE 8000
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    libgl1-mesa-glx \
+    tzdata && \
+    ln -fs /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
+    dpkg-reconfigure -f noninteractive tzdata && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+CMD ["python", "app.py"]