title: Building SSIS solution using visual studio online build definition... .dtproj is not supported by MSBuild and cannot be built
body: <p>I've created a build definition via visual studio online that builds an SSIS project (dtproj).  The build appears to succeed but there is a warning that appears stating "dtproj is not supported by MSBuild and cannot be built".</p>
  
  <p>SSDT has been installed on the build server. </p>
  
  <p>Does anyone have any ideas why this warning would be showing up?</p>