fix: 修改Dockerfile

Dockerfile

@@ -19,9 +19,14 @@ FROM alpine
 
 WORKDIR /app
 
-RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories && \
+    apk --update add tzdata && \
+    cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
+    echo "Asia/Shanghai" > /etc/timezone && \
+    apk del tzdata && \
+    rm -rf /var/cache/apk/*
 
-RUN echo "Asia/Shanghai" > /etc/timezone
+COPY conf ./conf
 
 COPY --from=build /app/main /app/main