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47 lines
1.9 KiB
Markdown
47 lines
1.9 KiB
Markdown
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# Docker Image Specification v1.
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This directory contains documents about Docker Image Specification v1.X.
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The v1 file layout and manifests are no longer used in Moby and Docker, except in `docker save` and `docker load`.
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However, v1 Image JSON (`application/vnd.docker.container.image.v1+json`) has been still widely
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used and officially adopted in [V2 manifest](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md)
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and in [OCI Image Format Specification](https://github.com/opencontainers/image-spec).
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## v1.X rough Changelog
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All 1.X versions are compatible with older ones.
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### [v1.2](v1.2.md)
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* Implemented in Docker v1.12 (July, 2016)
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* The official spec document was written in August 2016 ([#25750](https://github.com/moby/moby/pull/25750))
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Changes:
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* `Healthcheck` struct was added to Image JSON
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### [v1.1](v1.1.md)
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* Implemented in Docker v1.10 (February, 2016)
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* The official spec document was written in April 2016 ([#22264](https://github.com/moby/moby/pull/22264))
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Changes:
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* IDs were made into SHA256 digest values rather than random values
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* Layer directory names were made into deterministic values rather than random ID values
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* `manifest.json` was added
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### [v1](v1.md)
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* The initial revision
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* The official spec document was written in late 2014 ([#9560](https://github.com/moby/moby/pull/9560)), but actual implementations had existed even earlier
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## Related specifications
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* [Open Containers Initiative (OCI) Image Format Specification v1.0.0](https://github.com/opencontainers/image-spec/tree/v1.0.0)
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* [Docker Image Manifest Version 2, Schema 2](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md)
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* [Docker Image Manifest Version 2, Schema 1](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-1.md) (*DEPRECATED*)
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* [Docker Registry HTTP API V2](https://docs.docker.com/registry/spec/api/)
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