Building with local packages

NuGet.config

@@ -7,6 +7,7 @@
   </fallbackPackageFolders>
   <packageSources>
     <clear />
+	<add key="dotnet-core" value="C:\projects\packages\Debug" />
     <add key="dotnet-core" value="https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json" />
     <add key="dotnet-core" value="https://dotnetfeed.blob.core.windows.net/dotnet-coreclr/index.json" />
   </packageSources>

dir.props

@@ -67,6 +67,7 @@
       https://www.myget.org/F/nugetbuild/api/v3/index.json;
       https://api.nuget.org/v3/index.json;
       https://dotnet.myget.org/F/dotnet-corefxlab/api/v3/index.json;
+	  C:\projects\packages\Debug;
       $(RestoreSources);
     </RestoreSources>
   </PropertyGroup>

eng/Versions.props

@@ -7,11 +7,11 @@
   </PropertyGroup>
   <!--Package versions-->
   <PropertyGroup>
-    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.6.0-preview4.19123.2</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
-    <MicrosoftNETCorePlatformsPackageVersion>3.0.0-preview4.19123.2</MicrosoftNETCorePlatformsPackageVersion>
-    <MicrosoftNETCoreTargetsPackageVersion>2.0.0</MicrosoftNETCoreTargetsPackageVersion>
+    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.6.0-dev.19126.1</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
+    <MicrosoftNETCorePlatformsPackageVersion>3.0.0-dev.19126.1</MicrosoftNETCorePlatformsPackageVersion>
+    <MicrosoftNETCoreTargetsPackageVersion>3.0.0-dev.19126.1</MicrosoftNETCoreTargetsPackageVersion>
     <NETStandardLibraryPackageVersion>2.0.3</NETStandardLibraryPackageVersion>
-    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>3.0.0-preview4-27425-73</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
+    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>3.0.0-preview-27122-01</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
     <MicrosoftBclJsonSourcesPackageVersion>4.6.0-preview.19072.2</MicrosoftBclJsonSourcesPackageVersion>
     <MicrosoftWindowsDesktopAppPackageVersion>3.0.0-preview4-27419-14</MicrosoftWindowsDesktopAppPackageVersion>
   </PropertyGroup>