ISO build:
- Remove stale archipelago-rootfs-tmp container before creating new one
(previous failed builds leave it behind, blocking subsequent builds)
Container ports:
- OnlyOffice: fix LAN address from 8044 to 9980 (actual mapped port)
- Nginx Proxy Manager: fix from 8181 to 81 (correct admin port)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>