A submitted modpack was durable but unreadable: the uploads PVC cannot cross
namespaces (felis-api mounts it; Kaniko runs in felis-build) and the s3 lane
handed the sandboxed build Pod no credentials, so NO user build could ever
consume its context. The transport is now the API itself:
- submit: derived context refs become the internal-face URL
/api/v1/internal/submissions/{id}/context (service-token gated), and Blobs
gains Open (local + s3) with an ErrBlobNotFound sentinel for the route's 404.
- api: serves that route on the internal face only (openapi.yaml updated; the
route-coverage test enforces it).
- build: an http(s) context renders a context-fetch initContainer (the felis
image's new fetch-context entrypoint) that streams the blob with the
namespace-local service-token Secret — never mounted into Kaniko — and
extracts it under a zip-slip guard into a size-limited emptyDir that Kaniko
reads read-only as --context=/context.
- platform/install: the api Deployment carries its own internal base URL; the
build namespace gets the token Secret through the existing replica mechanism
(bootstrap.sh + felis setup); the build egress lock opens exactly the control
namespace on the internal port.
- cmd/felis: fetch-context entrypoint (registered, documented, unit-tested for
escapes/symlinks/non-gzip).
Tests cover rendering, hardening, the s3/local Open paths, and the route's
404/503 mapping. Verified next on the real single-node cluster with Kaniko.
The dual-faced felis-api: internal (service) and external (public/app/admin) routes behind a Zero-Trust guard. Includes the access domain (whitelist, ban, and LuckPerms permission/group control over the owner-gated RCON path), the modpack submission endpoints, and the admin-tier SysAdmin fleet read. Structured access fields are charset-validated before assembly so no field can splice a second RCON command.
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