The Linux build script was hardcoded to feat/android-voip-client, which
is an older branch that doesn't have the current DRED work or the relay
fixes from 8c4d640. Default the branch to opus-DRED-v2 (current active
development branch), thread it through to the remote script as a third
positional arg, and allow override via `WZP_BRANCH=<name> ./build-linux-docker.sh`.
This is also what let us discover that the relay at 172.16.81.175:4433
was running d0c1731 (android-rewrite) and missing the 8c4d640
CallSetup/advertised-IP fix — direct calls failed until the relay was
rebuilt locally.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
a7b2f850f1