Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
-# 使用阿里云镜像
-FROM registry.cn-hangzhou.aliyuncs.com/library/node:18-alpine
+# 使用阿里云公共镜像
+FROM registry.cn-hangzhou.aliyuncs.com/cloud/node:18-alpine
 LABEL maintainer="hejiayu <hejy47@nudt.edu.cn>"
 
 WORKDIR /gitlink_help_center
@@ -8,8 +8,11 @@ WORKDIR /gitlink_help_center
 RUN npm config set registry https://registry.npmmirror.com
 RUN yarn config set registry https://registry.npmmirror.com
 
+# 复制项目文件
 COPY ./ /gitlink_help_center/
 
+# 安装依赖并构建
 RUN yarn install
 RUN npm run build -- --locale zh-cn
+
 CMD ["npm", "run", "serve"]