If you haven’t start learning PowerShell Desired State Configuration yet, you should its awesome. One of the things that kept catching me out, was adding new DSC resources to my pull server. The resources are PowerShell modules, so you just download them from the PowerShell Gallery right? No. The steps I follow are below, they should be performed on the Pull server directly or via a PS session
Install-Module -Name cDscDocker
Get-Module cDscDocker -ListAvailable | Publish-ModuleToPullServer -PullServerWebConfig "$env:SystemDrive\inetpub\wwwroot\PSDSCPullServer\web.config"
and that’s it.