Alternatively, if it's just the lack of browser that's an issue, you can generate a token on a device that does have a browser and use it on the server:
* Go to https://
.cloudflareaccess.com/warp and authenticate.
* On the 'Success' page in the browser, right click and 'Inspect' the blue 'Open Cloudflare WARP' button. Copy the long token that's shown linked to the button, and then type the following into a command prompt on the remote server:
warp-cli teams-enroll-token https://<team>.cloudflareaccess.com/auth?token=<token you copied>
.