Config Transform in Azure DevOps

Question

I would like to use a visual studio proj file to transform xml files. I am following this article. http://sedodream.com/2010/04/26/ConfigTransformationsOutsideOfWebAppBuilds.aspx . This works for me locally, however when deploying the application on Azure DevOps it fails. It cannot find Microsoft.Web.Publishing.Tasks.dll. How do I set up a build task that will only transform the config files.

<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <UsingTask TaskName="TransformXml"
             AssemblyFile="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v15.0\Web\Microsoft.Web.Publishing.Tasks.dll"/>
    <Target Name="Build">
        <TransformXml Source="Web.config"
                      Transform="Web.Release.config"
                      Destination="Web.Production.config" />
    </Target>
</Project>

Answer 1

Turned out to be an easy fix. It was an old build so that the hosted agent. Just had to change it to the Hosted VS2017 agent.