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

learn/learn-kubernetes-master/kiamol/ch07/docker-images/simple-proxy/Dockerfile

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+FROM mcr.microsoft.com/dotnet/sdk:6.0-alpine AS builder
+
+WORKDIR /src
+COPY src/SimpleProxy.csproj .
+RUN dotnet restore
+
+COPY src /src
+RUN dotnet publish -c Release -o /out SimpleProxy.csproj
+
+# app image
+FROM mcr.microsoft.com/dotnet/runtime:6.0-alpine
+
+EXPOSE 1080
+WORKDIR /app
+ENTRYPOINT ["dotnet", "SimpleProxy.dll"]
+
+COPY --from=builder /out/ .

learn/learn-kubernetes-master/kiamol/ch07/docker-images/simple-proxy/src/Program.cs

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+using Microsoft.Extensions.Configuration;
+using System;
+using System.Net;
+using System.Threading;
+using System.Threading.Tasks;
+using Titanium.Web.Proxy;
+using Titanium.Web.Proxy.EventArguments;
+using Titanium.Web.Proxy.Models;
+
+namespace SimpleProxy
+{
+    class Program
+    {
+        private static ManualResetEvent _ResetEvent = new ManualResetEvent(false);
+        private static IConfiguration _Config;
+
+        static void Main(string[] args)
+        {
+            _Config = GetConfig();
+
+            var port = _Config.GetValue<int>("Proxy:Port");
+            var proxyServer = new ProxyServer();
+            proxyServer.BeforeRequest += OnRequest;
+
+            var explicitEndPoint = new ExplicitProxyEndPoint(IPAddress.Any, port, false);
+            proxyServer.AddEndPoint(explicitEndPoint);
+            proxyServer.Start();
+
+            Console.WriteLine($"** Logging proxy listening on port: {port} **");
+            _ResetEvent.WaitOne();
+
+            proxyServer.BeforeRequest -= OnRequest;
+            proxyServer.Stop();
+        }
+
+        private static IConfiguration GetConfig()
+        {
+            return new ConfigurationBuilder()
+                .AddJsonFile("appsettings.json")
+                .AddEnvironmentVariables()
+                .Build();
+        }
+
+        public static Task OnRequest(object sender, SessionEventArgs e)
+        {
+            var sourceUri = e.HttpClient.Request.RequestUri.AbsoluteUri;
+            if (sourceUri == _Config.GetValue<string>("Proxy:Request:UriMap:Source"))
+            {
+                var targetUri = _Config.GetValue<string>("Proxy:Request:UriMap:Target");
+                Console.WriteLine($"{e.HttpClient.Request.Method} {sourceUri} -> {targetUri}");
+                e.HttpClient.Request.RequestUri = new Uri(targetUri);
+            }
+            else if (_Config.GetValue<bool>("Proxy:Request:RejectUnknown"))
+            {
+                Console.WriteLine($"{e.HttpClient.Request.Method} {e.HttpClient.Request.Url} [BLOCKED]");
+                e.Ok("");
+            }
+            else
+            {
+                Console.WriteLine($"{e.HttpClient.Request.Method} {e.HttpClient.Request.Url}");
+            }
+            return Task.CompletedTask;
+        }
+    }
+}

learn/learn-kubernetes-master/kiamol/ch07/docker-images/simple-proxy/src/SimpleProxy.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
+    <PackageReference Include="Titanium.Web.Proxy" Version="3.1.1301" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="appsettings.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

learn/learn-kubernetes-master/kiamol/ch07/docker-images/simple-proxy/src/appsettings.json

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+{
+  "Proxy": {
+    "Port": 1080,
+    "Request": {
+      "RejectUnknown": true,
+      "UriMap": {
+        "Source": "http://localhost/api",
+        "Target": "http://blog.sixeyed.com"
+      }
+    }
+  }
+}