Update Dockerfile

Dockerfile

@@ -4,11 +4,7 @@ FROM node:latest
 # 系统安装ping
 USER root
 RUN apt-get update
-RUN apt-get install -y snap
 
-RUN apt-get install -y iputils-ping 
-RUN chmod +s /bin/ping 
-RUN sudo snap connect node-red:network-observe
 # 清理缓存
 RUN npm cache clean --force  
 
@@ -22,7 +18,7 @@ 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 -g node-red-node-email node-red-node-ping 
+RUN npm install -g node-red-node-email
 
 # 启动 Node-RED 
 CMD ["node-red", "--userDir", "/usr/src/node-red"]