* Edit your config file `~/.config/verdaccio/config.yalm` an add the following section (more info on the `key`, `cert` and `ca` arguments on the [Node documentation](https://nodejs.org/api/tls.html#tls_tls_createsecurecontext_options))
If you are using the Docker image, you have to set the `PROTOCOL` environment variable to `https` as the `listen` argument is provided on the [Dockerfile](https://github.com/verdaccio/verdaccio/blob/master/Dockerfile#L43), and thus ignored from your config file.
You can also set the `PORT` environment variable if you are using a different port than `4873`.