fix(perception): isolate Worker Docker credentials

experiments/perception/worker/Invoke-M49T1GSeg3DQualification.ps1

@@ -47,6 +47,10 @@ $runOutput = Join-Path $output $RunId
 if (Test-Path -LiteralPath $runOutput) { throw "M49 T1 output already exists" }
 $null = New-Item -ItemType Directory -Path $runOutput
 $runOutput = Resolve-DDirectory $runOutput "M49 T1 run output" $false
+$dockerConfig = Join-Path $runOutput "docker-config"
+$null = New-Item -ItemType Directory -Path $dockerConfig
+'{"auths":{}}' | Set-Content -LiteralPath (Join-Path $dockerConfig "config.json") -Encoding ascii
+$env:DOCKER_CONFIG = $dockerConfig
 
 $os = Get-CimInstance Win32_OperatingSystem
 $freeMemoryGiB = [double]$os.FreePhysicalMemory / 1MB