Update Dockerfile

Dockerfile

@@ -4,7 +4,10 @@ RUN mkdir /app
 WORKDIR /app
 # 克隆指定仓库代替COPY
 RUN git clone https://github.com/qwertyuiopasdfghjklzxcvbnm0987654321/weibo-rss .
-RUN npm i -g npm && npm ci --ignore-scripts && npm run build
+
+# 先生成lock文件
+RUN npm i -g npm && npm install --package-lock-only
+RUN npm ci --ignore-scripts && npm run build
 
 FROM node:18-alpine
 LABEL maintainer="https://github.com/zgq354/weibo-rss"