What does HackerNews think of image-spec?

Docker Is Four Things | Aug 2023

If you're going to be pedantic about minutae, you have to get it right.

The "image side of a Dockerfile" isn't a Dockerfile, it's an image, more specifically an image in the OCI Image Format [0]. A Dockerfile is just the most common syntax for controlling software that can create an OCI image (such as Docker and Podman).

You could argue that the OCI Image Format is declarative, but that's not relevant to OP's comment about Dockerfiles.

[0] https://github.com/opencontainers/image-spec

Launch HN: Fly.io (YC W20) – Deploy app servers close to your users | Mar 2020

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We're not running docker or making you run it. We simply use docker images (aka OCI image format https://github.com/opencontainers/image-spec) as the packaging format for your application code and dependencies.

Three New Open Source Container Utilities | Jul 2017

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> These days Oracle is synonymous with vendor lock-in

It seems like their container builder, Smith, creates OCI [1] images, an open format that can be used from other tools such as runc or rkt.

[1] https://github.com/opencontainers/image-spec

KubeApps – Discover and launch Kubernetes-ready apps using Helm | Feb 2017

I'm really excited to see projects like make containerized applications more available. There's a lot of awesome new projects in this space and I'm hoping that we as a community can come together and adopt a standard API for compatibility across all tools. CNR[0] is the name of the effort that is essentially extending OCI[1] to support apps (Helm, KPM, Kubernetes, Docker Compose, Docker DAB).

[0]: https://github.com/cn-app-registry/

[1]: https://github.com/opencontainers/image-spec

Hypernetes: Bringing Security and Multi-Tenancy to Kubernetes | May 2016

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The OCI Runtime spec is still a work in progress. Docker and HyperV are implementing parts of the current pre-release versions of the OCI Runtime spec.

You can use OCI Runtime bundles with rkt if you use the oci2aci[1] tool and rkt will be a full OCI runtime once the OCI Runtime and Image spec mature. We can use help to get these OCI projects[2][3] to v1.0 if you can spare cycles!

[1] https://github.com/huawei-openlab/oci2aci

[2] https://github.com/opencontainers/runtime-spec

[3] https://github.com/opencontainers/image-spec

Docker 1.11: The first OCI-compliant runtime, built on containerd | Apr 2016

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I think that's because OCI currently only has a specification for the runtime, not the distributable image. But it seems like as of a few weeks ago, work is underway to standardize the distributable image as well: https://github.com/opencontainers/image-spec