Eliminates the slow waitForCloudInit() + bun install phase by booting
a pre-built image with Node.js, bun, and openclaw already installed.
The image is rebuilt daily via GitHub Actions to pick up new releases.
Other agents are unaffected — they still use ubuntu:24.04 + cloud-init.
Co-authored-by: spawn-bot <spawn-bot@openrouter.ai>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
