title: How can I use msbuild without project.assets.json or nuget restore?
body: <p>I have a .Net Standard project in a solution and I want msbuild to build it on our build server.  If I do not run "nuget restore" first, I get the error "project.assets.json' not found. Run a NuGet package restore".  I already have all of the necessary NuGet packages in the "packages" folder at the solution level.  I would like to indicate somehow that msbuild should just use the files in the local "packages" folder instead of trying to re-download the files.  How can I do this?  Thank you.</p>