molecule-core/docs/adr
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feat(workspace-server): local-dev provisioner builds from Gitea source when MOLECULE_IMAGE_REGISTRY is unset (#63, Task #194)
OSS contributors who clone molecule-core and `go run ./workspace-server/cmd/server`
now get a working end-to-end provision without authenticating to GHCR or AWS ECR.

Pre-fix: with MOLECULE_IMAGE_REGISTRY unset, the provisioner attempted to pull
ghcr.io/molecule-ai/workspace-template-<runtime>:latest, which has been
returning 403 since the 2026-05-06 GitHub-org suspension.

Post-fix: when MOLECULE_IMAGE_REGISTRY is unset, the provisioner switches to
local-build mode — looks up the workspace-template-<runtime> repo's HEAD sha
on Gitea via a single API call, shallow-clones into ~/.cache/molecule/, and
runs `docker build --platform=linux/amd64`. SHA-pinned cache key skips the
clone+build entirely on subsequent provisions.

Production tenants are unaffected: every prod tenant sets the var to its
private ECR mirror, so the SaaS pull path is byte-for-byte identical.

SSOT for mode detection lives in Resolve() (registry_mode.go) returning a
discriminated RegistrySource{Mode, Prefix} so call sites that branch on
mode get a compile-time push instead of a string-equality footgun.

Coverage:
* registry_mode.go            — new SSOT (Resolve, RegistryMode, IsKnownRuntime)
* registry_mode_test.go       — 8 tests pinning mode-decision contract
* localbuild.go               — clone+build pipeline (570 LOC, fully unit-tested)
* localbuild_test.go          — 22 tests covering happy/sad paths, fail-closed
* provisioner.go              — Start() inserts ensureLocalImageHook in local mode
* docs/adr/ADR-002            — design rationale + alternatives + security review
* docs/development/local-development.md — local-build flow + env overrides

Security:
* Allowlist-only runtime names (knownRuntimes) gate the clone path.
* Repo prefix hardcoded to git.moleculesai.app/molecule-ai/molecule-ai-workspace-template-;
  forks via opt-in MOLECULE_LOCAL_TEMPLATE_REPO_PREFIX.
* MOLECULE_GITEA_TOKEN masked in every log line via maskTokenInURL/maskTokenInString.
* Fail-closed: Gitea unreachable / runtime not mirrored → clear error, never
  silently fall back to GHCR/ECR.
* docker build invocation passes no --build-arg from external input.
* HTTP body cap 64KB on Gitea API responses (defence vs malicious upstream).

Closes #63 / Task #194.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-07 15:16:51 -07:00
..
ADR-001-admin-token-scope.md chore: move platform/docs/adr/ to root docs/adr/ — single docs location 2026-04-18 00:12:47 -07:00
ADR-002-local-build-mode-via-registry-presence.md feat(workspace-server): local-dev provisioner builds from Gitea source when MOLECULE_IMAGE_REGISTRY is unset (#63, Task #194) 2026-05-07 15:16:51 -07:00