Try build with dotnet root

azure-pipelines.yml

@@ -106,7 +106,7 @@ stages:
             - pwsh: dotnet tool restore
               displayName: install dotnet tools
 
-            - pwsh: ./build.ps1 --target=dotnet --configuration="${{ BuildConfiguration.name }}" --verbosity=diagnostic --DotNetDirectory "$env:DOTNET_ROOT" 
+            - pwsh: ./build.ps1 --target=dotnet --configuration="${{ BuildConfiguration.name }}" --verbosity=diagnostic 
               displayName: 'Install .NET'
               retryCountOnTaskFailure: 3
               env:

build.cake

@@ -42,6 +42,8 @@ string envProgramFiles = EnvironmentVariable("ProgramFiles(x86)");
 var configuration = GetBuildVariable("BUILD_CONFIGURATION", GetBuildVariable("configuration", "DEBUG"));
 bool isHostedAgent = agentName.StartsWith("Azure Pipelines") || agentName.StartsWith("Hosted Agent");
 
+var dotnetInstallDirectory = EnvironmentVariable("DOTNET_ROOT");
+
 var localDotnet = GetBuildVariable("workloads",  (target == "VS-WINUI") ? "global" : "local") == "local";
 var vsVersion = GetBuildVariable("VS", "");
 

eng/cake/dotnet.cake

@@ -14,9 +14,19 @@ Task("dotnet")
 
         DotNetCoreBuild("./build/DotNet/DotNet.csproj", new DotNetCoreBuildSettings
         {
+            // MSBuildSettings = new DotNetCoreMSBuildSettings()
+            //     .EnableBinaryLogger($"{logDirectory}/dotnet-{configuration}.binlog")
+            //     .WithProperty("InstallWorkloadPacks", "false")
+            //     .SetConfiguration(configuration),
+
+            // if(!string.IsNullOrEmpty(dotnetInstallDirectory))
+            // {
                MSBuildSettings= new DotNetCoreMSBuildSettings()
                 .EnableBinaryLogger($"{logDirectory}/dotnet-{configuration}.binlog")
+                .WithProperty("InstallWorkloadPacks", "false")
+                .WithProperty("DotNetDirectory", dotnetInstallDirectory)
                 .SetConfiguration(configuration),
+            //}
         });
     });