$dockerLocation = Join-Path $env:TEMP "docker.zip"

if ((test-path $dockerLocation)) 
{
    $localModified = (Get-Item $dockerLocation).LastWriteTime 
    $webRequest = [System.Net.HttpWebRequest]::Create("<%= @docker_download_url %>");
    $webRequest.Method = "HEAD";
    $webResponse = $webRequest.GetResponse()
    $remoteLastModified = ($webResponse.LastModified) -as [DateTime] 
    $webResponse.Close()

    if ($remoteLastModified -gt $localModified)
    {
        exit 1
    }
    else
    {
        exit 0
    }
}

exit 1