Snapx publish/update using a local directory

nuget.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="demoapp-publish" value="c:\demoapp_nupkgs" />
    <add key="demoapp-update" value="c:\demoapp_nupkgs" />
  </packageSources>
  <activePackageSource>
    <add key="All" value="(Aggregate source)" />
  </activePackageSource>
</configuration>