Fixed DockerBuild.ps1 clean. Fixed missing artifacts warning.

Author: gfraiteur

src/PostSharp.Engineering.BuildTools/Build/Testing/TestCommand.cs

@@ -109,6 +109,17 @@ public static bool Execute( BuildContext context, BuildSettings settings )
 
             File.WriteAllText( emptyFile, "This file is intentionally empty." );
         }
+        
+        var dumpDirectory = Path.Combine( context.RepoDirectory, product.DumpDirectory );
+    
+        if ( !Directory.GetFiles( dumpDirectory ).Any() )
+        {
+            // We have to create an empty file, otherwise TeamCity will complain that
+            // artifacts are missing.
+            var emptyFile = Path.Combine( dumpDirectory, ".empty" );
+
+            File.WriteAllText( emptyFile, "This file is intentionally empty." );
+        }
 
         // Raise the post-test event.
         var buildInfo = BuildArguments.Read( context, settings.BuildConfiguration );

src/PostSharp.Engineering.BuildTools/Resources/DockerBuild.ps1

@@ -112,9 +112,10 @@ if (-not $env:IS_TEAMCITY_AGENT -and -not $NoClean)
     Write-Host "Cleaning up." -ForegroundColor Green
     if (Test-Path "artifacts")
     {
-        Remove-Item artifacts -Force -Recurse -ProgressAction SilentlyContinue
+        Remove-Item artifacts -Force -Recurse  -ErrorAction SilentlyContinue
     }
-    Get-ChildItem @("bin", "obj") -Recurse | Remove-Item -Force -Recurse -ProgressAction SilentlyContinue
+    Get-ChildItem "bin" -Recurse | Remove-Item -Force -Recurse -ErrorAction SilentlyContinue
+    Get-ChildItem "obj" -Recurse | Remove-Item -Force -Recurse -ErrorAction SilentlyContinue
 }
 
 # Create secrets JSON file.