Supply-chain hardening for the CI pipeline. 23 workflow files
modified, 59 mutable-tag refs replaced with commit SHAs.
The risk
Every `uses:` reference in .github/workflows/*.yml was pinned to a
mutable tag (e.g., `actions/checkout@v4`). A maintainer of an
action — or a compromised maintainer account — can repoint that
tag to malicious code, and our pipelines silently pull it on the
next run. The tj-actions/changed-files compromise of March 2025 is
the canonical example: maintainer credential leak, attacker
repointed several `@v<N>` tags to a payload that exfiltrated
repository secrets. Repos that pinned to SHAs were unaffected.
The fix
Replace each `@v<N>` with `@<commit-sha> # v<N>`. The trailing
comment preserves human readability ("ah, this is v4"); the SHA
makes the reference immutable.
Actions covered (10 distinct):
actions/{checkout,setup-go,setup-python,setup-node,upload-artifact,github-script}
docker/{login-action,setup-buildx-action,build-push-action}
github/codeql-action/{init,autobuild,analyze}
dorny/paths-filter
imjasonh/setup-crane
pnpm/action-setup (already pinned in molecule-app, listed here for completeness)
Excluded:
Molecule-AI/molecule-ci/.github/workflows/disable-auto-merge-on-push.yml@main
— internal org reusable workflow; we control its repo, threat model
is different from third-party actions. Conventional to pin to @main
rather than SHA for internal reusables.
The maintenance cost
SHA pinning means upstream fixes require manual SHA bumps. Without
automation, pinned SHAs go stale. So this PR also enables Dependabot
across four ecosystems:
- github-actions (workflows)
- gomod (workspace-server)
- npm (canvas)
- pip (workspace runtime requirements)
Weekly cadence — the supply-chain attack window is "minutes between
repoint and pull"; weekly auto-bumps don't help with zero-days
regardless. The point is to pull in non-zero-day fixes without
operator effort.
Aligns with user-stated principle: "long-term, robust, fully-
automated, eliminate human error."
Companion PR: Molecule-AI/molecule-controlplane#308 (same pattern,
smaller surface).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
molecule-core is a public repo — GHA-hosted minutes are free. The
self-hosted Mac mini was only in play to dodge GHA rate limits
(memory feedback_selfhosted_runner), but for these specific
workflows it came with real costs:
- Docker-push workflows emulated linux/amd64 from arm64 via QEMU —
every canvas + platform image build ran ~2-3x slower than native.
- Six PRs worth of keychain-avoidance hacks in publish-* because
`docker login` on macOS writes to osxkeychain unconditionally,
and the Mac mini's launchd user-agent keychain is locked.
- Homebrew pin-down environment variables (HOMEBREW_NO_*) sprinkled
everywhere to work around the shared /opt/homebrew symlink mess
on the runner.
- Setup-python@v5 couldn't write to /Users/runner, so ci.yml
python-lint resorted to a hand-rolled Homebrew python3.11 dance.
- Single runner → fan-out contention; CodeQL's 45-min analysis
fought the canvas publish for the one slot.
Changes across the 7 workflows:
- runs-on: [self-hosted, macos, arm64] → ubuntu-latest (every job)
- publish-canvas-image + publish-workspace-server-image:
drop the hand-rolled auths-map step + QEMU setup + buildx v4
→ docker/login-action@v3 + setup-buildx@v3. Linux + amd64
target = native build.
- canary-verify + promote-latest: replace `brew install crane` +
HOMEBREW_NO_* incantations with imjasonh/setup-crane@v0.4.
- codeql.yml: drop `brew install jq` — jq is preinstalled on
ubuntu-latest.
- ci.yml shellcheck: drop the self-hosted existence check —
shellcheck is preinstalled via apt.
- ci.yml python-lint: replace the Homebrew python3.11 path dance
with actions/setup-python@v5 (which works fine on GHA-hosted),
add requirements.txt caching while we're there.
- Remove stale comments referencing "the self-hosted runner",
"Mac mini", keychain, osxkeychain etc.
The self-hosted Mac mini remains in service for private-repo
workflows only. Memory feedback_selfhosted_runner updated to
reflect the public-repo scope carve-out.
Net -96 lines across the 7 files.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Six prior PRs (#273, #319, #322, #341, #484, #486) all kept calling
`docker login` and tried to coerce credsStore via increasingly elaborate
config tricks. None worked. The latest publish-canvas-image and
publish-platform-image runs on main are still failing with:
error storing credentials - err: exit status 1,
out: `User interaction is not allowed. (-25308)`
Verified locally on the runner host (2026-04-16): `docker login` on
macOS unconditionally writes credentials to osxkeychain after a
successful login, regardless of the config presented to it.
# I wrote this:
{ "auths": {}, "credsStore": "", "credHelpers": {} }
# After `docker login --config <dir> ghcr.io ...` succeeded:
{
"auths": { "ghcr.io": {} }, # empty — auth is in Keychain
"credsStore": "osxkeychain" # Docker rewrote it back
}
So `--config` flag, DOCKER_CONFIG env var, credsStore="" etc. all share
the same fate: Docker re-enables osxkeychain after every successful
login. The Mac mini runner is a launchd user agent with a locked
Keychain, so storage fails with -25308.
This PR replaces the `docker login` invocation entirely. We write
`base64(user:pat)` directly into the disposable DOCKER_CONFIG's `auths`
map. `docker/build-push-action@v5` and the daemon honor the auths map
for push without ever calling `docker login`, so the Keychain is never
involved.
Same shape in both workflows:
- publish-canvas-image.yml — single registry (ghcr.io)
- publish-platform-image.yml — two registries (ghcr.io + registry.fly.io)
Fly username remains literal "x".
Security:
- Token env vars never echoed. Heredoc writes the auth blob via
`umask 077` (file mode 600). The temp config dir lives under
RUNNER_TEMP and is reaped at job end.
- Diagnostics preserved (docker version + binary ls + registry keys
only, no values) so future runner permission regressions remain
visible without leaking secrets.
Equivalent to closed PR #464 — re-opening because main is still
broken (verified by inspecting the most recent failure). The closing
comment on #464 stated the issue was already addressed by #341, but
it isn't.
docker/login-action@v3 ignores DOCKER_CONFIG and still tries the
macOS system keychain on the self-hosted runner, producing:
error storing credentials: User interaction is not allowed. (-25308)
Switch to `docker login ... --password-stdin` which respects
DOCKER_CONFIG and writes credentials to the per-run config.json
we created in the isolate step. Applied to both GHCR and Fly
registry logins in both publish workflows.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The heredoc block writing Docker config.json had unindented `{` at
column 1, which GitHub Actions' YAML parser interpreted as a flow
mapping start — causing every publish-platform-image and
publish-canvas-image run to fail with 0 jobs (startup_failure).
Replace `cat <<'JSON' ... JSON` with a single `printf` call that
produces identical config.json content without confusing the parser.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Two fixes:
1. publish-canvas-image.yml + publish-platform-image.yml: the JSON
heredoc for config.json had leading whitespace from YAML indentation,
producing invalid JSON. Docker fell back to osxkeychain → -25308.
Fixed by removing indentation inside the heredoc body.
2. Added scripts/dev-start.sh — one-command local dev environment.
Starts infra (docker-compose), platform (Go), and canvas (Next.js)
with proper health checks and cleanup on Ctrl-C.
Closes#399.
## Root cause
`publish-platform-image.yml` existed for the Go platform image but there
was no equivalent for the canvas. After every canvas PR merged, CI ran
`npm run build` and passed — but the live container at :3000 was never
updated. The `canvas-deploy-reminder` job only posted a comment asking
operators to manually rebuild, which was consistently missed.
## What this adds
- `.github/workflows/publish-canvas-image.yml`: triggers on `canvas/**`
changes to main (and `workflow_dispatch`). Mirrors the platform workflow:
macOS Keychain isolation, QEMU for linux/amd64, Buildx, GHCR push with
`:latest` + `:sha-<7>` tags.
- `NEXT_PUBLIC_PLATFORM_URL` / `NEXT_PUBLIC_WS_URL` resolve from
`workflow_dispatch` inputs → `CANVAS_PLATFORM_URL` / `CANVAS_WS_URL`
repo secrets → `localhost:8080` defaults (safe for self-hosted dev).
- Inputs are passed via env vars (not direct `${{ }}` interpolation) to
prevent shell injection from string inputs.
- `docker-compose.yml`: adds `image: ghcr.io/molecule-ai/canvas:latest`
to the canvas service so `docker compose pull canvas && docker compose
up -d canvas` applies the new image. `build:` is retained for local
development. Adds a comment clarifying that `NEXT_PUBLIC_*` runtime env
vars are ignored by the standalone bundle (build-time only).
- `ci.yml`: updates `canvas-deploy-reminder` commit comment to reference
`docker compose pull` as the fast path, with `docker compose build` as
the local-source fallback.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
