Manually create a package from a zip, or upload an entire folder of uncompressed files. NOTE : Dotnetcore does not handle large (over 1 gig) well. Use cURL or a similar client for best results.
The most reliable way to add a package is to upload with curl. Use the following script
curl -X POST -H "Content-Type: multipart/form-data" -F "Files=@<your-file>.zip" http://127.0.0.1:49112/v1/packages/<package name>?isArchive=true