title: Merge multiple web projects into a single output zip package
body: <p>I'm using Visual Studio Online and working through building a continuous integration setup. The scenario I have requires that multiple web projects are built out to a single Azure App Service deployment.  The catch is that "out of the box" when you create a new build, the Visual Studio Build task appears to create a separate zip file for each project in the solution, and then the Azure App Service Deploy task throws an error saying there is more than one file matching the pattern, which is *.zip. </p>
  
  <p>What I'd like to do is build all of these projects out to a single location, merging the various projects together, and then Azure App Service Deploy only has a single zip file to push, which I know it can do just fine. My MSBuild arguments for the Visual Studio Build task are <code>/p:DeployOnBuild=true /p:WebPublishMethod=Package /p:PackageAsSingleFile=true /p:SkipInvalidConfigurations=true /p:PackageLocation="$(build.artifactstagingdirectory)\\"</code>. I tried removing the <code>PackageAsSingleFile</code> attribute but it still created the zip files.</p>
  
  <p>Is the scenario I want to do possible in VSO, perhaps with a different set of command codes?</p>