You can add a custom NuGet.config file at the same level as your .SLN file.

You can then make the following modifications (assuming that your private feed requires authentication, create a set of credentials which only are used for this site):

<activePackageSource> <add key="All" value="(Aggregate source)" /> </activePackageSource> <packageSources> <add key="nuget.org" value="https://www.nuget.org/api/v2/" /> <add key="custom_package_source" value="https://custom_package_source/nuget/v1/FeedService.svc/" /> </packageSources> <disabledPackageSources /> <packageSourceCredentials> <custom_package_source> <add key="Username" value="CustomUsername" /> <add key="ClearTextPassword" value="CustomPassword" /> </custom_package_source> </packageSourceCredentials>

When you deploy via Kudu, this should allow the build process to discover your private feed, authenticate & restore your packages.