full4 base deploy timed out at 2400s on the 7-GiB single node. Root causes:
(1) sidekiq.depends_on referenced undefined service 'discourse' (main svc is 'app') → abra config
--images rc=15 → prepull SKIPPED → 2.4GB image pulled inline during deploy, eating convergence
budget. Overlay now overrides sidekiq.depends_on:[app] (swarm ignores depends_on → no-op at
runtime, masks nothing) so prepull resolves+pre-pulls images on both base+head deploys.
(2) bumped DEPLOY_TIMEOUT/TIMEOUT 2400→3600 for headroom on the RAM/CPU-constrained Rails cold boot.
Also pre-cached bitnamilegacy/discourse:3.3.1 by tag on cc-ci (was dangling <none>).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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