housekeeping: Enable deterministic builds

Author: glennawatson

src/Directory.Build.props

@@ -23,8 +23,15 @@
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <!-- Include PDB in the built .nupkg -->
     <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
+    <IncludePackageReferencesDuringMarkupCompilation>true</IncludePackageReferencesDuringMarkupCompilation>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl> 
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
+    <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
+  </PropertyGroup>
+  
   <ItemGroup Condition="'$(IsTestProject)' != 'true'">
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
   </ItemGroup>