Deployment.props

<Project>

  <!--
    Look in an external deployment folder (intended for build secrets) with the same name as the solution folder
    for any appsettings.json files where the environment name matches the publish profile. Include them as links
    under each .pubxml file so that they can be easily edited and accessed outside of the current repository.
  -->
  <ItemGroup>
    <None Include="..\..\Deployment\$([System.IO.Path]::GetFileName($(SolutionDir.TrimEnd('\\'))))\appsettings.*.json">
      <Link>Properties\PublishProfiles\%(Filename)%(Extension)</Link>
      <DependentUpon>$([System.String]::Copy('%(Filename)').Split('.')[1]).pubxml</DependentUpon>
    </None>
  </ItemGroup>

</Project>