# secure image

Published articles for secure image.

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## Custom Assembly and Private APK Repositories are Now Generally Available

DevFeed: [Custom Assembly and Private APK Repositories are Now Generally Available](<https://devfeed.tech/articles/custom-assembly-and-private-apk-repositories-are-now-generally-available-13014.md>)

Original publisher: [Read original article](<https://www.chainguard.dev/unchained/custom-assembly-and-private-apk-repositories-now-generally-available>)

Published: 2025-07-15T00:00:00Z

Content type: release

Language: en

Sources: [Chainguard: Unchained](<https://devfeed.tech/sources/chainguard-unchained.md>)

Topics: [chainguard containers](<https://devfeed.tech/topics/chainguard-containers.md>), [APK](<https://devfeed.tech/topics/apk.md>), [container images](<https://devfeed.tech/topics/container-images.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [announce](<https://devfeed.tech/tags/announce.md>), [apk-repositories](<https://devfeed.tech/tags/apk-repositories.md>), [chainguard-containers](<https://devfeed.tech/tags/chainguard-containers.md>), [container-images](<https://devfeed.tech/tags/container-images.md>), [custom-assembly](<https://devfeed.tech/tags/custom-assembly.md>), [cve-remediation](<https://devfeed.tech/tags/cve-remediation.md>), [new-features](<https://devfeed.tech/tags/new-features.md>), [secure-image](<https://devfeed.tech/tags/secure-image.md>), [slsa](<https://devfeed.tech/tags/slsa.md>)

### AI overview

Chainguard announces the general availability of Custom Assembly and Private APK Repositories for Chainguard Containers. The features let customers customize container images, access Chainguard packages through customer-specific endpoints, and use Chainguard Factory for automated builds and ongoing maintenance.

### Source excerpt

Custom Assembly and Private APK Repositories, two new features for Chainguard Containers, are now generally available.

## Reproducing Chainguard's reproducible image builds

DevFeed: [Reproducing Chainguard's reproducible image builds](<https://devfeed.tech/articles/reproducing-chainguard-s-reproducible-image-builds-13211.md>)

Original publisher: [Read original article](<https://www.chainguard.dev/unchained/reproducing-chainguards-reproducible-image-builds>)

Published: 2023-07-05T00:00:00Z

Content type: tutorial

Language: en

Sources: [Chainguard: Unchained](<https://devfeed.tech/sources/chainguard-unchained.md>)

Topics: [chainguard images](<https://devfeed.tech/topics/chainguard-images.md>), [supply-chain-security](<https://devfeed.tech/topics/supply-chain-security.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [Tooling](<https://devfeed.tech/topics/tooling.md>)

Tags: [apko](<https://devfeed.tech/tags/apko.md>), [attestation](<https://devfeed.tech/tags/attestation.md>), [build](<https://devfeed.tech/tags/build.md>), [chainguard](<https://devfeed.tech/tags/chainguard.md>), [chainguard-images](<https://devfeed.tech/tags/chainguard-images.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [cosign](<https://devfeed.tech/tags/cosign.md>), [hardened-images](<https://devfeed.tech/tags/hardened-images.md>), [locks](<https://devfeed.tech/tags/locks.md>), [reproducibility](<https://devfeed.tech/tags/reproducibility.md>), [reproducible-builds](<https://devfeed.tech/tags/reproducible-builds.md>), [secure-image](<https://devfeed.tech/tags/secure-image.md>), [security](<https://devfeed.tech/tags/security.md>), [software-supply-chain](<https://devfeed.tech/tags/software-supply-chain.md>), [supply-chain-security](<https://devfeed.tech/tags/supply-chain-security.md>), [wolfi](<https://devfeed.tech/tags/wolfi.md>)

### AI overview

A tutorial explaining how to reproduce a Chainguard Images build using cosign and apko. It describes locking image configurations and notes caveats involving tooling changes and withdrawn packages.

### Source excerpt

Learn how to reproduce a Chainguard Images build using cosign and apko.

## Designing build date epoch in Chainguard Images

DevFeed: [Designing build date epoch in Chainguard Images](<https://devfeed.tech/articles/designing-build-date-epoch-in-chainguard-images-13019.md>)

Original publisher: [Read original article](<https://www.chainguard.dev/unchained/designing-build-date-epoch-in-chainguard-images>)

Published: 2023-06-08T00:00:00Z

Content type: article

Language: en

Sources: [Chainguard: Unchained](<https://devfeed.tech/sources/chainguard-unchained.md>)

Topics: [chainguard images](<https://devfeed.tech/topics/chainguard-images.md>), [container images](<https://devfeed.tech/topics/container-images.md>), [Git](<https://devfeed.tech/topics/git.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [APK](<https://devfeed.tech/topics/apk.md>)

Tags: [apk](<https://devfeed.tech/tags/apk.md>), [build-date-epoch](<https://devfeed.tech/tags/build-date-epoch.md>), [chainguard-images](<https://devfeed.tech/tags/chainguard-images.md>), [container-image](<https://devfeed.tech/tags/container-image.md>), [cves](<https://devfeed.tech/tags/cves.md>), [git](<https://devfeed.tech/tags/git.md>), [images](<https://devfeed.tech/tags/images.md>), [secure-image](<https://devfeed.tech/tags/secure-image.md>), [wolfi](<https://devfeed.tech/tags/wolfi.md>)

### AI overview

This article explains how Chainguard Images use deterministic timestamps to remain reproducible without displaying a misleading 1970 creation date. It describes source date epoch, Git commit timestamps, APK package metadata, and the additional build date epoch considerations when images incorporate newer packages to address CVEs.

### Source excerpt

Learn how we make Chainguard Images reproducible using build date epoch.