Estou tentando fazer com que o MSDeploy execute um script do PowerShell em um servidor remoto. É assim que eu executo o MSDeploy:

msdeploy \
  -verb:sync \ 
  -source:runCommand='C:\temp\HelloWorld.bat', \
  waitInterval=15000,waitAttempts=1 \
  -dest:auto,computername=$WebDeployService$Credentials -verbose

HelloWorld.bat contém:

echo "Hello world!"
powershell.exe C:\temp\WebDeploy\Package\HelloWorld.ps1
echo "Done"

O HelloWorld.ps1 contém apenas:

Write-Host "Hello world from PowerShell!"

No entanto, parece que o PowerShell nunca termina. Esta é a saída da execução do msdeploy:

Verbose: Performing synchronization pass #1.
Verbose: Source runCommand (C:\temp\HelloWorld.bat) does not match destination (C:\temp\HelloWorld.bat) differing in attributes (isSource['True','False']). Update pending.
Info: Updating runCommand (C:\temp\HelloWorld.bat).
Info:

Info: C:\temp>echo "Hello world!"
"Hello world!"

C:\temp\WebDeploy>powershell.exe C:\temp\HelloWorld.ps1

Info: Hello world from Powershell!
Info:

Warning: The process 'C:\Windows\system32\cmd.exe' (command line '/c "C:\Users\peter\AppData\Local\Temp\gaskgh55.b2q.bat
"') is still running. Waiting for 15000 ms (attempt 1 of 1).
Error: The process 'C:\Windows\system32\cmd.exe' (command line '/c "C:\Users\peter\AppData\Local\Temp\gaskgh55.b2q.bat"'
) was terminated because it exceeded the wait time.
Error count: 1.

Alguém conhece uma solução?