Cosign v3.0 (shipped by default with sigstore/cosign-installer@cad07c2e,
release v3.0.5) removed --output-signature and --output-certificate from
the sign-blob subcommand. The replacement is a single --bundle flag that
emits a unified Sigstore bundle (.sigstore.json) containing the
signature, certificate chain, and Rekor inclusion proof in one file.
This change migrates both sign-blob invocations in .github/workflows/
release.yml (per-binary matrix signing and aggregate checksums.txt
signing), updates the artefact upload paths, the artefact aggregation
case filter, the GitHub Release asset list, and the release-notes body
verify-blob example. The README cosign verification snippet and sidecar
description are also updated to the --bundle / .sigstore.json shape.
No cosign version pinning. No legacy fallback. OCI image signing
(cosign sign on image digest) is unchanged — only sign-blob flags
changed in v3.0. See M-11 in certctl-audit-report.md.
Verification gates:
- YAML parse: OK
- go vet ./...: exit 0
- go build ./...: exit 0
- grep 'cosign sign-blob' release.yml: 2 (expected: 2)
- grep '.sigstore.json' release.yml: 9 (expected: >=5)
- grep '.sig/.pem' release.yml non-comment: 0 (expected: 0)
- README legacy cosign refs: 0 (expected: 0)
- docs/ legacy cosign refs: 0 (expected: 0)
Coverage: unchanged (CI workflow edit + README — zero Go code touched).
Addresses Medium finding M-4 in the audit report. The multi-stage
Dockerfiles previously had no ARG declarations for HTTP_PROXY,
HTTPS_PROXY, or NO_PROXY, so corporate-proxy environments silently
failed at 'npm ci' (frontend stage) and 'go mod download' (Go builder).
The npm retry idiom (`npm ci --include=dev || npm ci --include=dev`)
masked the failure because the upstream 'Exit handler never called!'
bug exits 0 despite the install crash.
Fix: thread HTTP_PROXY / HTTPS_PROXY / NO_PROXY ARGs through every
Docker build stage that performs network I/O, re-export them as ENV
with both upper- and lower-case aliases (apk/curl/npm read lowercase;
Go/Node read uppercase), and forward the host shell's environment via
`build.args:` in every compose file and `build-args:` in the release
workflow's docker/build-push-action steps. Defaults are empty strings
so un-proxied builds remain byte-identical to the pre-fix tree.
Scope: Dockerfile (frontend + Go builder stages), Dockerfile.agent
(Go builder stage), deploy/docker-compose.yml (server + agent),
deploy/docker-compose.dev.yml (server + agent), deploy/docker-compose.test.yml
(server + agent), .github/workflows/release.yml (both docker/build-push-action
v6 invocations). Zero Go, web, test, or runtime code changes. Zero
base-image changes. Existing npm `||` retry idiom and `ARG TARGETARCH`
preserved verbatim.
CWE-1173 (Improper Use of Validated Input) / CWE-16 (Configuration).
Verification:
- YAML parses clean across all four compose files and release.yml.
- yamllint -d relaxed: clean exit across all five YAML files.
- All six `build.args:` blocks expose HTTP_PROXY, HTTPS_PROXY, NO_PROXY
with default-empty ${VAR:-} substitution.
- Both release.yml docker/build-push-action steps expose the same
three keys sourced from ${{ secrets.HTTP_PROXY }}, etc.
- Dockerfiles contain 5 proxy ARG declarations total (Dockerfile has 2
stages × 3 ARGs = 6 lines, Dockerfile.agent has 1 stage × 3 ARGs = 3
lines); lowercase ENV aliases verified present in every stage.
- git diff --shortstat: 6 files changed, 117 insertions(+), 0 deletions.
Pure additive.
Docker-live verification (`docker build`, `docker compose config`)
deferred to CI / post-commit smoke because the sandbox has no Docker
runtime. hadolint, go, golangci-lint, govulncheck likewise unavailable
in the sandbox; per-layer CI coverage gates (service 55%, handler 60%,
domain 40%, middleware 30%) are trivially unaffected as M-4 touches
zero Go source files.
Release workflow now pushes to both ghcr.io and Docker Hub on tag.
Adds shields.io Docker Pulls badge to README for social proof.
Requires DOCKERHUB_USERNAME and DOCKERHUB_TOKEN repo secrets.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Builds and pushes certctl-server and certctl-agent images to ghcr.io
when a version tag (v*) is pushed. Also creates a GitHub Release with
auto-generated release notes and Docker pull instructions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Shankar