2021-09-20 12:13:43 -05:00
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# Why zot?
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A comparison between various registries and their capabilities with respect to zot.
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Please see [documentation](./examples/README.md) for various configuration options.
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## [docker distribution](https://github.com/distribution/distribution)
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| | docker distribution | zot |
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|---|---|---|
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| **Last stable release** | v2.7.1 (Jan 17, 2019) | v1.3.0 (Sep 1, 2021) |
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| **License** | Apache 2.0 | Apache 2.0 |
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| **On-premise deployment** | yes | yes |
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| **Minimal build*** | no | yes |
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| **Storage Layout** | project-specific layout [1] | ociv1 image layout [2] |
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| **Authentication** | auxiliary [3] | built-in |
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| **Authorization** | auxiliary [3] | built-in |
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| **Garbage collection** | requires server shutdown | inline |
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| **Storage deduplication** | none | inline |
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| **Cloud storage support** | yes | yes |
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| **Delete by tag** | unsupported [4],[5] | yes |
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| **Vulnerability scanning** | none | built-in |
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| **cli** | yes | yes |
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| **ui** | auxiliary [3],[4] | yes [8] |
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| **External contributions** | yes | yes |
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| **CNCF project** | yes [9] | no |
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2021-09-28 18:51:59 -05:00
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| **dist-spec conformance** | pending 3.x release [10][11] | yes [12] |
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2021-09-20 12:13:43 -05:00
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2021-09-28 18:51:59 -05:00
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\* NOTE: "minimal build" criterion above means the ability to build a minimal
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2021-09-20 12:13:43 -05:00
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distribution-spec compliant registry in order to reduce library dependencies
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and the possible attack surface.
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# References
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[1] https://github.com/distribution/distribution/tree/main/registry/storage
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[2] https://github.com/opencontainers/image-spec
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[3] https://github.com/cesanta/docker_auth
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[4] https://github.com/distribution/distribution/issues/3234
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[5] https://github.com/distribution/distribution/issues/2747
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[6] https://github.com/Joxit/docker-registry-ui
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[7] https://github.com/parabuzzle/craneoperator
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[8] https://github.com/anuvu/zot-ui
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[9] https://www.docker.com/blog/donating-docker-distribution-to-the-cncf/
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[10] https://github.com/distribution/distribution/issues/3203
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[11] https://github.com/opencontainers/oci-conformance/tree/main/distribution-spec#distributiondistribution
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[12] https://github.com/opencontainers/oci-conformance/tree/main/distribution-spec#anuvuzot
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