Include the download script

.github/workflows/msbuild-test.yml

@@ -10,7 +10,7 @@ jobs:
       with:
         submodules: recursive
     - name: Download MSBuild installer
-      run: powershell "$source = (New-Object System.Net.WebClient).DownloadString(\"https://gist.githubusercontent.com/sgkoishi/87e613881f9164bf03849603dd4f4266/raw/\") ; Add-Type
+      run: powershell "$source = Get-Content -Path \"scripts\\SetupMSBuild.cs\" ; Add-Type
         -TypeDefinition \"$source\" ; [SetupMSBuild]::Download((Get-Item -Path \".\\\").FullName);
         "
     - name: Setup .NET SDK

scripts/SetupMSBuild.cs

@@ -0,0 +1,22 @@
+using System;
+
+public class SetupMSBuild
+{
+    public static void Download(string directory)
+    {
+        try
+        {
+            var wc = new System.Net.WebClient();
+            var content = wc.DownloadString("https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=BuildTools&rel=16");
+            var url = System.Text.RegularExpressions.Regex.Match(content, 
+                "https://download.visualstudio.microsoft.com/download/.*\\.exe").Value;
+            Console.WriteLine(url);
+            wc.DownloadFile(url, System.IO.Path.Combine(directory, "vs_BuildTools.exe"));
+            wc.DownloadFile("https://dist.nuget.org/win-x86-commandline/latest/nuget.exe", System.IO.Path.Combine(directory, "nuget.exe"));
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine(e);
+        }
+    }
+}