Move to 3.0 Preview 6 SDK (#11472)

* Work around https://github.com/dotnet/cli/issues/11378
* Fix site extensions - thanks @JunTaoLuo❕

eng/Workarounds.targets

@@ -31,7 +31,6 @@
     <WarnOnPackingNonPackableProject>false</WarnOnPackingNonPackableProject>
   </PropertyGroup>
 
-
   <!-- Workaround for https://github.com/dotnet/arcade/issues/204 -->
   <ItemGroup>
     <PackageReference Include="Internal.AspNetCore.BuildTasks" PrivateAssets="All" Version="$(InternalAspNetCoreBuildTasksPackageVersion)" IsImplicitlyDefined="true" />
@@ -58,4 +57,10 @@
     </KnownFrameworkReference>
   </ItemGroup>
 
+  <!-- Work around https://github.com/dotnet/cli/issues/11378. -->
+  <Target Name="_WorkaroundNetStandard" AfterTargets="ResolvePackageAssets">
+    <ItemGroup>
+      <TransitiveFrameworkReference Remove="NETStandard.Library" />
+    </ItemGroup>
+  </Target>
 </Project>

eng/targets/ReferenceAssembly.targets

@@ -76,10 +76,6 @@
     </ItemGroup>
 
     <PropertyGroup>
-      <ProjectListFile>$(MSBuildThisFileDirectory)..\eng\ProjectReferences.props</ProjectListFile>
-      <RefsTargetFramework>$(TargetFrameworks)</RefsTargetFramework>
-      <RefsTargetFramework Condition="'$(RefsTargetFramework)' == ''">$(TargetFramework)</RefsTargetFramework>
-
       <ReferencesContent>
       <![CDATA[
   <ItemGroup Condition="'%24(TargetFramework)' == '$(TargetFramework)'">

global.json

@@ -1,9 +1,9 @@
 {
   "sdk": {
-    "version": "3.0.100-preview5-011568"
+    "version": "3.0.100-preview6-012264"
   },
   "tools": {
-    "dotnet": "3.0.100-preview5-011568",
+    "dotnet": "3.0.100-preview6-012264",
     "runtimes": {
       "dotnet/x64": [
         "$(MicrosoftNETCoreAppRuntimeVersion)"

src/SiteExtensions/build.cmd

@@ -10,8 +10,9 @@ IF %ERRORLEVEL% NEQ 0 (
 )
 
 ECHO Building LoggingBranch
-CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x64 -projects %~dp0LoggingBranch\LB.csproj /bl:artifacts/log/SiteExtensions-LoggingBranch-x64.binlog %*
-CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x86 -projects %~dp0LoggingBranch\LB.csproj /bl:artifacts/log/SiteExtensions-LoggingBranch-x86.binlog %*
+REM Remove /p:DisablePackageAssetsCache=true /p:DisableTransitiveFrameworkReferences=true which workarounds dotnet store and publish behaviour changes in preview 6
+CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x64 -projects %~dp0LoggingBranch\LB.csproj /p:DisablePackageAssetsCache=true /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x64.binlog %*
+CALL %RepoRoot%\build.cmd -forceCoreMsbuild -arch x86 -projects %~dp0LoggingBranch\LB.csproj /p:DisablePackageAssetsCache=true /p:DisableTransitiveFrameworkReferences=true /bl:artifacts/log/SiteExtensions-LoggingBranch-x86.binlog %*
 
 IF %ERRORLEVEL% NEQ 0 (
    EXIT /b %ErrorLevel%
@@ -24,4 +25,4 @@ IF %ERRORLEVEL% NEQ 0 (
    EXIT /b %ErrorLevel%
 )
 
-ECHO SiteExtensions successly built!
+ECHO SiteExtensions successfully built!