feat(protonvpn): updater finds more servers using app-version linux-vpn

[qdm12]

Description

Try it using image tag :pr-3099

See title and issue.

Issue

#3067

Assertions

• I am aware that we do not accept manual changes to the servers.json file
• I am aware that any changes to settings should be reflected in the wiki

[gravelfreeman]

I tested ghcr.io/qdm12/gluetun:pr-3099 locally with Docker.

Command used:

docker run --rm \
  -v "$PWD/gluetun:/gluetun" \
  ghcr.io/qdm12/gluetun:pr-3099 \
  update -enduser -providers protonvpn \
  -proton-email '<redacted>' \
  -proton-password '<redacted>'

The image pulls and starts correctly, but the ProtonVPN server update still fails during authentication with:

ERROR updating server information: getting protonvpn servers: authentifying with Proton: getting auth information: data field missing in response: username is empty

Notes:

• This is a Proton VPN-only single-service account, not tied to any other Proton ecosystem services.
• In Proton Account settings, Account > Username shows my email address.
• I used that exact value for -proton-email, and the result is still the same username is empty error.

[qdm12]

@gravelfreeman thanks! I did push the possible fix 00d944e for your situation, where it fallsback to use the email address instead of username, if you don't have a username set. I'll bring it to the master branch if it works for you.

On the hand, I did try updating servers on my side, and:

• master branch updating produces a 531.8K json file
• this branch updating produces a.... 531.8K json file as well

so that PR will be closed unfortunately.