Lithium SDK - 401 HTTP error when submitting plugin

Hi there

I started using the new Lithium SDK today and got stuck when trying to upload my plugin to the staging environment. I get the following error:

[18:17:36] Starting 'plugin-upload'...
? Would you like to upload plugin to server? Yes
[18:17:39] Uploading plugin
[18:17:39] server returned status code 401

We are using HTTP basic auth to protect our staging environment from unauthenticated users. I tried to set the corresponding username and password in the server.conf.json configuration file as follows:

{
  "serverUrl": "http://<username>:<password>@<community-stage-url>"
}

Unfortunately I still get the same error as mentioned above.

Is there an option to set the HTTP basic auth credentials in the configuration file somehow?

Thank you in advance.

Moreno