FileExists.ps1

$sleep = 2 #Sleeptime in seconds between checks
$maxtry = 10 #Nr of tr
$successfile = "c:\temp\success.txt"
$failedfile = "c:\temp\fail.txt"
Write-Host "Waiting for deploy to complete"
for ($i=1; $i -le $maxtry; $i++) {
    if (Test-Path "${successfile}") { 
        Write-Host "${successfile} found - Deploy was SUCCESSFUL!!"
        Break
    }
    else {
        Write-Host "try $i of $maxtry"
        Start-Sleep -Seconds $sleep
        if (Test-Path "${failedfile}") { 
            Write-Host "${failedfile} found - Deploy FAILED!!"
            break
        }
        if ($i -eq 10) {
            Write-Host "$successfile not found, Deploy failed?"
            Break
        }
    }
}