53 lines
1.9 KiB
Markdown
53 lines
1.9 KiB
Markdown
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---
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redirect_from:
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- /engine/misc/breaking/
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description: Breaking changes
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keywords: docker, documentation, about, technology, breaking, incompatibilities
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title: Breaking changes and incompatibilities
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---
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Every Engine release strives to be backward compatible with its predecessors,
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and interface stability is always a priority at Docker.
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In all cases, feature removal is communicated three releases
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in advance and documented as part of the [deprecated features](deprecated.md)
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page.
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The following list compiles any updates to Docker Engine that created
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backwards-incompatibility for old versions of Docker tools.
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> **Note**: In the case of your local environment, you should be updating your
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Docker Engine using [Docker Desktop for Mac](/docker-for-mac),
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[Docker Desktop for Windows](/docker-for-windows). That way all your tools stay
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in sync with Docker Engine.
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## Engine 1.10
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There were two breaking changes in the 1.10 release that affected
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Registry and Docker Content Trust:
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**Registry**
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Registry 2.3 includes improvements to the image manifest that caused a
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breaking change. Images pushed by Engine 1.10 to a Registry 2.3 cannot be
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pulled by digest by older Engine versions. A `docker pull` that encounters this
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situation returns the following error:
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```none
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Error response from daemon: unsupported schema version 2 for tag TAGNAME
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```
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Docker Content Trust heavily relies on pull by digest. As a result, images
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pushed from the Engine 1.10 CLI to a 2.3 Registry cannot be pulled by older
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Engine CLIs (< 1.10) with Docker Content Trust enabled.
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If you are using an older Registry version (< 2.3), this problem does not occur
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with any version of the Engine CLI; push, pull, with and without content trust
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work as you would expect.
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**Docker Content Trust**
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Engine older than the current 1.10 cannot pull images from repositories that
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have enabled key delegation. Key delegation is a feature which requires a
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manual action to enable.
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