Update Dockerfile

Dockerfile

@@ -1,6 +1,12 @@
 # Use the official Node.js image as the base image
+# 基于 node:18 镜像
 FROM node:18
 
+# 更新 apt-get 并安装字体
+RUN apt-get update && apt-get install -y \
+    fonts-wqy-zenhei \ # 安装文泉驿正黑字体
+    xfonts-wqy # 安装文泉驿点阵宋体
+
 # Set the working directory inside the container
 WORKDIR /app