https://library.octopusdeploy.com/#!/listing octopus deploy step template : Download file from url

gistfile1.ps1

{
  "Id": "ActionTemplates-101",
  "Name": "DownOutputScripts",
  "Description": "Download file from url",
  "ActionType": "Octopus.Script",
  "Version": 4,
  "Properties": {
    "Octopus.Action.Package.NuGetFeedId": "feeds-builtin",
    "Octopus.Action.Script.Syntax": "PowerShell",
    "Octopus.Action.Script.ScriptSource": "Inline",
    "Octopus.Action.RunOnServer": "false",
    "Octopus.Action.Script.ScriptBody": "Write-Output \"v0.1-b20160420\"\n\n#$url = \"http://devres.hjfile.cn/co/as/Output-scripts.json\"\n\n#$output = \"$($OctopusParameters['Octopus.Action[Deploy Site].Output.Package.InstallationDirectoryPath'])\\App_Data\\Output-scripts.json\"\n$output = \"$($OctopusParameters['Octopus.Action[Deploy Site].Output.Package.InstallationDirectoryPath'])\\$($output)\"\n\nWrite-Output \"Downloading.. url: $($url) => output: $($output)\"\n\n$start_time = Get-Date\n\n$wc = New-Object System.Net.WebClient\n$wc.DownloadFile($url, $output)\n#OR\n#(New-Object System.Net.WebClient).DownloadFile($url, $output)\n\nWrite-Output \"Time taken: $((Get-Date).Subtract($start_time).Seconds) second(s)\"\n\n"
  },
  "Parameters": [
    {
      "Name": "url",
      "Label": "input url",
      "HelpText": "download file url",
      "DefaultValue": "http://devres.hjfile.cn/co/as/Output-scripts.json",
      "DisplaySettings": {
        "Octopus.ControlType": "SingleLineText"
      }
    },
    {
      "Name": "output",
      "Label": "output file path",
      "HelpText": "save to file path",
      "DefaultValue": "App_Data\\Output-scripts.json",
      "DisplaySettings": {
        "Octopus.ControlType": "SingleLineText"
      }
    }
  ],
  "$Meta": {
    "ExportedAt": "2016-04-20T03:42:50.088Z",
    "OctopusVersion": "3.3.3",
    "Type": "ActionTemplate"
  }
}