Demo images / Build & push demo images (push) Failing after 40s
Upstream publishes no docker images; our v0.18.4 image was built in-house. This pass: official v0.21.2-beta release binaries (sha256-verified against the signed release manifest), static, on alpine with the same entrypoint shape as our existing image, pushed to our registry and smoke-run. LND 0.21 auto-migrates the channel DB on first start (keeping a backup) — the Update button is user-initiated, never auto-applied.