Update Dockerfile

Dockerfile

@@ -1,11 +1,13 @@
-FROM python:3.11-slim
-WORKDIR /app
-COPY requirements.txt .
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    gcc \
-    && pip install --no-cache-dir -r requirements.txt \
-    && apt-get purge -y gcc \
-    && apt-get autoremove -y \
-    && rm -rf /var/lib/apt/lists/*
-COPY main.py .
+FROM python:3.11-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    gcc \
+    && pip install --no-cache-dir -r requirements.txt \
+    && apt-get purge -y gcc \
+    && apt-get autoremove -y \
+    && rm -rf /var/lib/apt/lists/*
+COPY main.py .
+# 复制 util 目录
+COPY util ./util
 CMD ["python", "-u", "main.py"]