mastodon

Image · Apps & productivity · standard · v4.7.3

A+cosign signedSPDX SBOMSLSA provenanceamd64 · arm64Rebuilt 2026-10-11

Mastodon, the federated social network server (web and sidekiq). Built from the release tag on a hardened Wolfi ruby-4.0 runtime with every gem compiled from source against Wolfi's libvips, libpq, ICU and libxml2, and the web assets compiled at build time, so no Node ships at runtime. Nonroot, read-only rootfs; PostgreSQL and Redis are external. The streaming server is a separate image.

Current digest (deployed by the chart)

sha256:341ac09b566bb125bde71410948b75a4896c2abc3ca3bd364427746addd96d6b

Signatures, the SBOM, and provenance all attach to this digest. Pin to it for reproducible, tamper-evident pulls.

Image

ghcr.io/quenchworks/images/mastodon:4.7.3

Signed

cosign keyless

SBOM

SPDX, on digest

Provenance

SLSA build

Architectures

amd64, arm64

Runs as

nonroot (uid 1001)

Root filesystem

read-only

Image size

323.1 MB

Published versions

1 tag

Each tag is a multi-arch index (amd64 + arm64) pinned by digest. Tagged by version, never :latest.

Version	Size	Published	Digest
4.7.3latest	323.1 MB	2026-10-11	sha256:341ac09b566b…

Security report (Trivy)

A+· 100/1000 fixable CVEs

Critical

High

Medium

Low

Unknown

fixable per nightly scan · peak 162 of 104 days with any · 2026-06-29 to 2026-10-11

Pull the image

Run it directly with Docker, Podman, or any Kubernetes workload. Nonroot, read-only root filesystem, built for amd64 and arm64.

Pull (tag)

docker pull ghcr.io/quenchworks/images/mastodon:4.7.3

Pinned by digest (recommended)

docker pull ghcr.io/quenchworks/images/mastodon@sha256:341ac09b566bb125bde71410948b75a4896c2abc3ca3bd364427746addd96d6b

Tags

4.7.34.7.3-amd644.7.3-arm64

Images are tagged by app version (never :latest): a multi-arch index plus per-arch tags.

App version: 4.7.3
Architectures: amd64, arm64
Runs as: nonroot (uid 1001)
Root filesystem: read-only
License: AGPL-3.0

Verify the supply chain

This image is cosign-signed and carries an SPDX SBOM and a SLSA build-provenance attestation on the same digest. Check all three yourself:

# 1. signature — built and signed by QuenchWorks CI
cosign verify ghcr.io/quenchworks/images/mastodon:4.7.3 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

# 2. SLSA build provenance — which workflow built it, from what
cosign verify-attestation --type https://slsa.dev/provenance/v1 ghcr.io/quenchworks/images/mastodon:4.7.3 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

# 3. SPDX SBOM — the package inventory
cosign verify-attestation --type https://spdx.dev/Document/v2.3 ghcr.io/quenchworks/images/mastodon:4.7.3 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

See the SBOM & provenance guide for reading the SBOM and using these checks in CI.

Transparency

Every image carries its SBOM and provenance as attestations on the same digest, publicly verifiable with the commands above (they check the package and the Sigstore transparency log, Rekor).

View the Helm chart View package

Upstream project: https://joinmastodon.org