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Ruben Fiszel
7590b28108
* feat(sandbox): pull/extract images with crane instead of podman (+ add to image)
The sandboxed container runtime (`# sandbox <image>`) only ever pulls + flattens an
image (nsjail does the run), so a full container engine is overkill — and podman was
never actually in any Dockerfile, so the merged feature couldn't run in the shipped
image. Switch to crane (google/go-containerregistry): a single ~25MB static binary,
no daemon/store/root/privileged.
- docker_v2.rs: crane export -> flattened rootfs tar, crane config -> OCI config,
crane digest -> content-addressed rootfs+config cache (cross-job dedup + automatic
freshness), crane manifest -> pre-download size guard. DOCKER_CONFIG authfile dir.
Cache eviction prunes the rootfs-tar cache by mtime (LRU). Pull policy honored via a
ref->digest cache (missing/never reuse without a registry hit).
- Dockerfile + docker/DockerfileSlim{,Ee}: install the crane binary (Full/FullEe and
the EE image inherit it via FROM the base image).
- docs + UI text + instance-setting descriptions updated (download size is compressed;
cache is the rootfs-tar cache).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(sandbox): address CI review — digest-pinned fetch, size cap on every job, eviction race
Codex P1s:
- Fetch by the resolved digest (name@digest), not the mutable tag, so content can't
diverge from the digest the cache is keyed under if a tag moves mid-fetch.
- Enforce the size cap on EVERY job via a cached {digest}.size sidecar (no registry call
on cache reuse), so lowering the limit rejects already-cached oversized images.
- Eviction race: hardlink the cache tar into the job dir before tar -xf (pins the inode
against concurrent eviction) and re-fetch if it was evicted first.
Claude P2s: atomic config sidecar (tmp+rename) + tolerate torn parse; soften the LRU
comment (mtime = creation order); sweep orphaned *.tmp.* and .size on eviction.
+digest_key/ref_key unit tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(sandbox): P1 cross-fs cache staging (EXDEV), Dockerfile arch fail-fast
CI re-review (Claude + Codex P1): the eviction-race hardlink crosses filesystems in the
shipped deployments — the cache is its own volume (/tmp/windmill/cache) while the job dir
is on the container fs — so hard_link returns EXDEV (not NotFound) and every sandbox job
fails. Fall back to tokio::fs::copy on a non-NotFound link error; copy reads through the
source inode so it still survives a concurrent eviction.
Also: Dockerfiles fail fast with a clear error on an unsupported arch instead of building
a 404 crane URL; ref->digest file written via tmp+rename (no torn read under missing/never).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* docs(sandbox): say 'oldest by creation time' not 'LRU' for cache eviction
Codex P2: the code evicts by tar creation time (cache hits don't touch mtime), so the
user-facing docs + instance-setting text shouldn't claim true LRU.
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>