cosign Kubernetes, CI & IaC
Shell-less Sigstore Cosign container signing & verification, built from source via melange.
Pull this image
docker pull ghcr.io/rtvkiz/minimal-cosign:latestdocker pull ghcr.io/rtvkiz/minimal-cosign:latest-devThe -dev variant adds a shell, package manager and build toolchain. For CI and debugging — not production.
Details
- Repository
- ghcr.io/rtvkiz/minimal-cosign
- Size (compressed)
- 97 MB
- Built
- 2026-08-13T15:37:50Z (today)
- Architectures
- x86_64, aarch64
- Primary package
- cosign
- Entrypoint
- /usr/bin/cosign
- User
- nonroot (65532)
- Working dir
- /workspace
- Architectures
- x86_64, aarch64
- Environment
- Labels
-
org.opencontainers.image.title minimal-cosign org.opencontainers.image.description Hardened shell-less Sigstore Cosign (container signing & verification) built from source via melange with daily CVE patches org.opencontainers.image.url https://github.com/rtvkiz/minimal org.opencontainers.image.source https://github.com/rtvkiz/minimal/tree/main/cosign org.opencontainers.image.licenses Apache-2.0
- Entrypoint
- /usr/bin/cosign
- User
- nonroot (65532)
- Working dir
- /workspace
- Architectures
- x86_64, aarch64
- Environment
- Labels
-
org.opencontainers.image.title minimal-cosign-dev org.opencontainers.image.description Dev variant of minimal-cosign: same cosign + shell + curl/openssl/dig/jq/git. Not for production. org.opencontainers.image.url https://github.com/rtvkiz/minimal org.opencontainers.image.source https://github.com/rtvkiz/minimal/tree/main/cosign org.opencontainers.image.licenses Apache-2.0 dev.minimal.variant dev
| Tag | Pull | Published |
|---|---|---|
| 3 | ghcr.io/rtvkiz/minimal-cosign:3 | 2026-08-14 |
| 3.1 | ghcr.io/rtvkiz/minimal-cosign:3.1 | 2026-08-14 |
| 3.1.3-r0 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0 | 2026-08-14 |
| 3.1.3-r0-20260814 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260814 | 2026-08-14 |
| latest | ghcr.io/rtvkiz/minimal-cosign:latest | 2026-08-14 |
| 3-dev | ghcr.io/rtvkiz/minimal-cosign:3-dev | 2026-08-14 |
| 3.1-dev | ghcr.io/rtvkiz/minimal-cosign:3.1-dev | 2026-08-14 |
| 3.1.3-r0-20260814-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260814-dev | 2026-08-14 |
| 3.1.3-r0-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-dev | 2026-08-14 |
| latest-dev | ghcr.io/rtvkiz/minimal-cosign:latest-dev | 2026-08-14 |
| 3.1.3-r0-20260813 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260813 | 2026-08-13 |
| 3.1.3-r0-20260813-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260813-dev | 2026-08-13 |
| 3.1.3-r0-20260812 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260812 | 2026-08-12 |
| 3.1.3-r0-20260812-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260812-dev | 2026-08-12 |
| 3.1.3-r0-20260811 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260811 | 2026-08-11 |
| 3.1.3-r0-20260811-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260811-dev | 2026-08-11 |
| 3.1.3-r0-20260810 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260810 | 2026-08-10 |
| 3.1.3-r0-20260810-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260810-dev | 2026-08-10 |
| 3.1.3-r0-20260809 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260809 | 2026-08-09 |
| 3.1.3-r0-20260809-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260809-dev | 2026-08-09 |
| 3.1.3-r0-20260808 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260808 | 2026-08-08 |
| 3.1.3-r0-20260808-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260808-dev | 2026-08-08 |
| 3.1.3-r0-20260807 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260807 | 2026-08-07 |
| 3.1.3-r0-20260807-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260807-dev | 2026-08-07 |
| 3.1.3-r0-20260806 | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260806 | 2026-08-06 |
| 3.1.3-r0-20260806-dev | ghcr.io/rtvkiz/minimal-cosign:3.1.3-r0-20260806-dev | 2026-08-06 |
14 packages in the image, resolved from the SPDX SBOM.
| Package | Version | License |
|---|---|---|
| alpine/ca-certificates | 20260413 | MPL-2.0 AND MIT |
| ca-certificates-bundle | 20260413-r1 | MPL-2.0 AND MIT |
| ca-certificates-bundle | 20260413-r1 | (MPL-2.0 AND MIT) |
| ca-certificates-bundle | 20260413-r1 | — |
| ca-certificates.yaml | 70f58e72ab3f2139f773ba5c148b573e8d835baa | Apache-2.0 |
| cosign-minimal | 3.1.3-r0 | Apache-2.0 |
| cosign/melange.yaml | f7373df05a7d1400bd2fd7c965bd213c269b27fd | — |
| sha256:e884508039178392cfbda3c75101583aa1285121758670ce7c39844bfee0843d | sha256:e884508039178392cfbda3c75101583aa1285121758670ce7c39844bfee0843d | — |
| sha256:fcd0e3f43c50e322eb38f310f018783b6e7c31ec9f638e9808f7199f9c7e3c68 | 20230201 | — |
| wolfi | 20230201 | — |
| wolfi-baselayout | 20230201-r29 | MIT |
| wolfi-baselayout | 20230201-r29 | MIT |
| wolfi-baselayout | 20230201-r29 | — |
| wolfi-baselayout.yaml | 35e7b4713442869116936fae3fe8cf7c69bc9054 | Apache-2.0 |
0 fixable
| CVE | Severity | Package | Installed | Fixed in |
|---|---|---|---|---|
| GO-2026-5932 | Unknown | golang.org/x/crypto | v0.55.0 | — |
Everything is verifiable without an account. Copy and run:
Build provenance (SLSA L3)
gh attestation verify oci://ghcr.io/rtvkiz/minimal-cosign:latest --owner rtvkizCosign signature
cosign verify \
--certificate-identity-regexp='https://github.com/rtvkiz/minimal/' \
--certificate-oidc-issuer='https://token.actions.githubusercontent.com' \
ghcr.io/rtvkiz/minimal-cosign:latestSBOM attestation (SPDX)
cosign verify-attestation --type spdxjson \
--certificate-identity-regexp='https://github.com/rtvkiz/minimal/' \
--certificate-oidc-issuer='https://token.actions.githubusercontent.com' \
ghcr.io/rtvkiz/minimal-cosign:latest \
| jq -r '.payload | @base64d | fromjson | .predicate'Signatures are logged in the public Rekor transparency log.