title: How to specifiy --project in the "dotnet run" build step
body: <p>This is my build step</p>
  
  <p><a href="https://i.stack.imgur.com/RAZPJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RAZPJ.png" alt="enter image description here"></a></p>
  
  <p>This is the produced log</p>
  
  <pre><code>2017-10-23T12:46:42.8958745Z ##[section]Starting: dotnet run Tools
  2017-10-23T12:46:42.8958745Z ==============================================================================
  2017-10-23T12:46:42.8958745Z Task         : .NET Core
  2017-10-23T12:46:42.8958745Z Description  : Build, test and publish using dotnet core command-line.
  2017-10-23T12:46:42.8958745Z Version      : 1.0.2
  2017-10-23T12:46:42.8958745Z Author       : Microsoft Corporation
  2017-10-23T12:46:42.8958745Z Help         : [More Information](https://go.microsoft.com/fwlink/?linkid=832194)
  2017-10-23T12:46:42.8958745Z ==============================================================================
  2017-10-23T12:46:43.3968589Z [command]"C:\Program Files\dotnet\dotnet.exe" run d:\a\1\s\Tools\Tools.csproj --configuration test
  2017-10-23T12:46:43.5008554Z Couldn't find a project to run. Ensure a project exists in d:\a\1\s, or pass the path to the project using --project.
  2017-10-23T12:46:43.5138548Z ##[error]Error: C:\Program Files\dotnet\dotnet.exe failed with return code: 1
  2017-10-23T12:46:43.5138548Z ##[error]Dotnet command failed with non-zero exit code on the following projects : d:\a\1\s\Tools\Tools.csproj
  2017-10-23T12:46:43.5168542Z ##[section]Finishing: dotnet run Tools
  </code></pre>
  
  <p>The problem is, the project the task should run is not passed via the <code>--project</code> argument. But how can I do that with the options the build step provides?</p>