Whether a builder's Docker daemon answers

Whether a builder's Docker daemon answers

A Supabase schema release's post-build test starts its scratch database through the Supabase CLI, which needs a running Docker daemon on the builder. Whether one answers there is a fixed readiness read:

stado host exec <builder> -- docker info

It runs the Docker CLI from the paths the fleet installs it at (/usr/bin/docker, /usr/local/bin/docker, /opt/homebrew/bin/docker), takes no argument beyond info, and starts, stops or pulls nothing; Docker's own answer names the server and its state, and a daemon that does not answer is Docker's own refusal.