Use calling directory as container working directory in DockerBuild.ps1.

The container's working directory is now set to the directory where the user invoked the script from, rather than the script's location. This allows users to run the script from any directory and have the container's working directory match their expectation.

Changes:
- Capture calling directory before Set-Location changes it
- Transform calling directory for container (drive letter mapping on Windows)
- Use calling directory as -w parameter in all docker run/exec commands
- Dockerfile path resolution already uses calling directory

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: gfraiteur

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

@@ -62,11 +62,15 @@ if ([string]::IsNullOrEmpty($BuildAgentPath))
     }
 }
 
+# Capture the calling directory (where the user invoked the script from)
+# This will be used as the working directory in the container
+$CallingDirectory = (Get-Location).Path
+
 # Resolve Dockerfile path relative to original current directory (before changing location)
 # This must be done before Set-Location to preserve the user's intended relative path
 if ($Dockerfile -and -not [System.IO.Path]::IsPathRooted($Dockerfile))
 {
-    $Dockerfile = Join-Path (Get-Location).Path $Dockerfile
+    $Dockerfile = Join-Path $CallingDirectory $Dockerfile
 }
 
 # Save current location and restore on exit
@@ -542,7 +546,7 @@ if (-not $KeepEnv)
     }
 }
 
-# Get the source directory name from $PSScriptRoot
+# Get the source directory name from $PSScriptRoot (script location)
 $SourceDirName = $PSScriptRoot
 
 # Start timing the entire process except cleaning
@@ -871,10 +875,11 @@ if ($IsWindows)
     }
     $VolumeMappings = $transformedVolumeMappings
 
-    # Transform MountPoints, GitDirectories, and SourceDirName for the container
+    # Transform MountPoints, GitDirectories, SourceDirName, and CallingDirectory for the container
     $MountPoints = $MountPoints | ForEach-Object { Get-ContainerPath $_ }
     $GitDirectories = $GitDirectories | ForEach-Object { Get-ContainerPath $_ }
     $ContainerSourceDir = Get-ContainerPath $SourceDirName
+    $ContainerCallingDir = Get-ContainerPath $CallingDirectory
 
     # Add both the unmapped (C:\X\...) and mapped (X:\...) paths to GitDirectories for safe.directory
     # Git may resolve paths differently depending on how it's invoked
@@ -911,6 +916,7 @@ else
 {
     # Unix (Linux/macOS): No drive letter mapping needed, paths remain as-is
     $ContainerSourceDir = $SourceDirName
+    $ContainerCallingDir = $CallingDirectory
 
     # Deduplicate (case-sensitive for Unix paths)
     $VolumeMappings = $VolumeMappings | Sort-Object -Unique
@@ -1348,13 +1354,13 @@ if (-not $BuildImage)
             if ($existingContainerId)
             {
                 # Reuse existing container with docker exec
-                Write-Host "Executing: ``docker exec $existingContainerId $dockerArgsAsString -w $ContainerSourceDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
-                docker exec $dockerArgs  -w $ContainerSourceDir $existingContainerId $pwshPath $pwshArgs -Command $inlineScript
+                Write-Host "Executing: ``docker exec $existingContainerId $dockerArgsAsString -w $ContainerCallingDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
+                docker exec $dockerArgs  -w $ContainerCallingDir $existingContainerId $pwshPath $pwshArgs -Command $inlineScript
             }
             else
             {
                 # Start new container with docker run
-                Write-Host "Executing: docker run --rm --memory=$Memory --cpus=$Cpus $isolationArg $dockerArgsAsString $VolumeMappingsAsString $envArgsAsString -w $ContainerSourceDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
+                Write-Host "Executing: docker run --rm --memory=$Memory --cpus=$Cpus $isolationArg $dockerArgsAsString $VolumeMappingsAsString $envArgsAsString -w $ContainerCallingDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
 
                 # Build docker command with proper argument handling (avoid empty strings)
                 $dockerCmd = @('run', '--rm', "--memory=$Memory", "--cpus=$Cpus")
@@ -1363,9 +1369,9 @@ if (-not $BuildImage)
                 $dockerCmd += $volumeArgs
                 $dockerCmd += $envArgs
                 if ($pwshArgs) {
-                    $dockerCmd += @('-w', $ContainerSourceDir, $ImageTag, $pwshPath, $pwshArgs, '-Command', $inlineScript)
+                    $dockerCmd += @('-w', $ContainerCallingDir, $ImageTag, $pwshPath, $pwshArgs, '-Command', $inlineScript)
                 } else {
-                    $dockerCmd += @('-w', $ContainerSourceDir, $ImageTag, $pwshPath, '-Command', $inlineScript)
+                    $dockerCmd += @('-w', $ContainerCallingDir, $ImageTag, $pwshPath, '-Command', $inlineScript)
                 }
 
                 & docker @dockerCmd
@@ -1438,13 +1444,13 @@ if (-not $BuildImage)
         if ($existingContainerId)
         {
             # Reuse existing container with docker exec
-            Write-Host "Executing: ``docker exec $existingContainerId $dockerArgsAsString -w $ContainerSourceDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
-            docker exec $dockerArgs  -w $ContainerSourceDir $existingContainerId $pwshPath $pwshArgs -Command $inlineScript
+            Write-Host "Executing: ``docker exec $existingContainerId $dockerArgsAsString -w $ContainerCallingDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
+            docker exec $dockerArgs  -w $ContainerCallingDir $existingContainerId $pwshPath $pwshArgs -Command $inlineScript
         }
         else
         {
             # Start new container with docker run
-            Write-Host "Executing: ``docker run --rm --memory=$Memory --cpus=$Cpus $isolationArg $dockerArgsAsString $VolumeMappingsAsString $envArgsAsString -w $ContainerSourceDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
+            Write-Host "Executing: ``docker run --rm --memory=$Memory --cpus=$Cpus $isolationArg $dockerArgsAsString $VolumeMappingsAsString $envArgsAsString -w $ContainerCallingDir $ImageTag `"$pwshPath`" $pwshArgs -Command `"$inlineScript`"" -ForegroundColor Cyan
 
             # Build docker command with proper argument handling (avoid empty strings)
             $dockerCmd = @('run', '--rm', "--memory=$Memory", "--cpus=$Cpus")
@@ -1453,9 +1459,9 @@ if (-not $BuildImage)
             $dockerCmd += $volumeArgs
             $dockerCmd += $envArgs
             if ($pwshArgs) {
-                $dockerCmd += @('-w', $ContainerSourceDir, $ImageTag, $pwshPath, $pwshArgs, '-Command', $inlineScript)
+                $dockerCmd += @('-w', $ContainerCallingDir, $ImageTag, $pwshPath, $pwshArgs, '-Command', $inlineScript)
             } else {
-                $dockerCmd += @('-w', $ContainerSourceDir, $ImageTag, $pwshPath, '-Command', $inlineScript)
+                $dockerCmd += @('-w', $ContainerCallingDir, $ImageTag, $pwshPath, '-Command', $inlineScript)
             }
 
             & docker @dockerCmd