title: How to upload npm tgz to nexus3
body: <p>I need to setup a private nexus oss 3 for internal nodejs development for our company. The project dependencies have to be download from developer's computer and copy across to the private network, and then upload/publish to the private nexus instance.</p>
  
  <p>We've write some scripts to pull all dependencies in .tgz format form the npm repo, and copied into the private network.</p>
  
  <p>But how can I upload those .tgz files to the npm repo of my private nexus without using the GUI? </p>