新增learn-kubernetes（https://github.com/yyong-brs/learn-kubernetes）相关文件

learn/learn-kubernetes-master/kiamol/ch10/docker-images/web-ping/Dockerfile

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+FROM node:16.13.1-alpine3.14 AS builder
+
+WORKDIR /src
+COPY src/package.json .
+RUN npm install
+
+FROM node:16.13.1-alpine3.14
+
+CMD ["node", "/app/app.js"]
+
+ENV TARGET="blog.sixeyed.com" \
+    METHOD="HEAD" \
+    INTERVAL="3000"
+
+WORKDIR /app
+COPY --from=builder /src/node_modules/ /app/node_modules/
+COPY src/ .

learn/learn-kubernetes-master/kiamol/ch10/docker-images/web-ping/src/app.js

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+const https = require('https');
+const log = require("./log");
+
+const options = {
+    hostname: process.env.TARGET,
+    method: process.env.METHOD
+  };
+
+log.Logger.info('** web-ping ** Pinging: %s; method: %s; %dms intervals', options.hostname, options.method, process.env.INTERVAL);
+  
+let i = 1;
+let start = new Date().getTime();
+setInterval(() => {    
+    start = new Date().getTime();
+    log.Logger.debug('Making request number: %d; at %d', i++, start);
+    var req = https.request(options, (res) => {
+        var end = new Date().getTime();    
+        var duration = end-start;    
+        log.Logger.debug('Got response status: %s at %d; duration: %dms', res.statusCode, end, duration);
+    });
+    req.on('error', (e) => {
+        console.error(e);
+      });
+    req.end();
+}, process.env.INTERVAL)

learn/learn-kubernetes-master/kiamol/ch10/docker-images/web-ping/src/config/logConfig.js

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+const { format, transports } = require('winston');
+var logConfig = module.exports = {};
+
+logConfig.options = {
+    transports: [
+        new transports.Console({
+            level: 'debug',
+            format: format.combine(
+                format.splat(),
+                format.printf(log => {
+                    return `${log.message}`
+                })
+            )
+        })
+    ]
+};

learn/learn-kubernetes-master/kiamol/ch10/docker-images/web-ping/src/log.js

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+const winston = require('winston');
+var logConfig = require('./config/logConfig');
+
+const logger = winston.createLogger(logConfig.options);
+exports.Logger = logger;

learn/learn-kubernetes-master/kiamol/ch10/docker-images/web-ping/src/package.json

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+{
+  "name": "web-ping",
+  "version": "1.0.0",
+  "main": "app.js",
+  "author": "kiamol",
+  "dependencies": {
+    "winston": "3.3.3"
+  }
+}