Update Dockerfile

Dockerfile

@@ -3,7 +3,6 @@ FROM node:latest
  
 # 安装 Node-RED 
 RUN npm install -g --unsafe-perm node-red 
-RUN npm install node-red-node-email
 
 # 创建并配置 settings.js  文件 
 RUN mkdir -p /usr/src/node-red && chown -R node:node /usr/src/node-red 
@@ -11,6 +10,8 @@ COPY settings.js  /usr/src/node-red/settings.js
 
 COPY flows.json  /usr/src/node-red/flows.json  
 
+# 安装节点
+RUN npm install node-red-node-email
 # 暴露 Node-RED 的默认端口 
 EXPOSE 1880