Changelog

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All notable changes to Tank are documented here. The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.2.0 - 2026-06-06

Changed

  • All OCI fetching now goes through Stevedore. Tank's bespoke registry client is replaced by a thin shim over Stevedore.Registry (bearer-token handshake, manifest fetch, digest-verified blobs). Image pulls are digest-for-digest equivalent — the runtime side (rootfs assembly, caching, offline mode) is unchanged. Depends on stevedore ~> 0.2.
  • Raised the minimum toolchain to Elixir 1.18 / OTP 28 (was ~> 1.15): Tank already used the built-in JSON module (1.18+) and depends on linx/stevedore, both ~> 1.18.

Added

  • The registry bearer token is now reused across a pull via Stevedore's token cache (Stevedore.Auth.Cache): the manifest and every blob share one token instead of re-running the 401 → token handshake per fetch.

0.1.0 - 2026-06-04

First public release — pull OCI/Docker images and run them as containers:

  • Image — pull an image and assemble a runnable root filesystem, with an on-disk content-addressed cache (blobs/, rootfs/, refs/) and a no-network offline: mode.
  • Runtime — materialize and run the workload (rootfs pivot, /proc·/dev·/sys, cgroup v2, namespaces) via linx.
  • Store — a tree-structured, Raft-replicated desired-state store.