What a builder boot sees is now what a node does:
- First boots (untouched, or -as-deployed with exactly a new server's
settings) are deployed by the node-agent's BootTest in keep mode; the
builder only watches the console and inspects what's left. The Go copy of
the deploy (its own docker run, mounts and startup prefix) is gone. It had
drifted: it gave the image's VOLUME folders their own volumes, which nodes
don't, so saves there looked safe while every start loses them.
- Files written outside /server and /data are counted whatever their type
(it only counted config-like extensions, so .sav or .db saves went
unseen), including the image's VOLUME folders; logs, pid and lock files
and system folders are left out.
- Boot tests ask the server to stay up holdSec (60 s, test.yaml can set it)
after its ready line and to listen on every published container port
(needs the node-agent's matching BootTest).
- Steam apps are downloaded once per build into a gbr.cache volume and copied
into each boot, so later boots only check the files (STEAM_CACHE=off).
- RUNNER.md no longer suggests docker system prune, which deletes the
gbr-boottest network when nothing is using it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>