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thaJeztah merged 1 commit into from
May 22, 2025
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docs: move deprecation status of legacy schema1 images to "removed" #6095

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17 changes: 6 additions & 11 deletions docs/deprecated.md
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Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@ The following table provides an overview of the current status of deprecated fea
| Removed | [`docker build --stream` flag (experimental)](#docker-build---stream-flag-experimental) | v20.10 | v20.10 |
| Deprecated | [`fluentd-async-connect` log opt](#fluentd-async-connect-log-opt) | v20.10 | v28.0 |
| Removed | [Configuration options for experimental CLI features](#configuration-options-for-experimental-cli-features) | v19.03 | v23.0 |
| Deprecated | [Pushing and pulling with image manifest v2 schema 1](#pushing-and-pulling-with-image-manifest-v2-schema-1) | v19.03 | v27.0 |
| Removed | [Pushing and pulling with image manifest v2 schema 1](#pushing-and-pulling-with-image-manifest-v2-schema-1) | v19.03 | v28.2 |
| Removed | [`docker engine` subcommands](#docker-engine-subcommands) | v19.03 | v20.10 |
| Removed | [Top-level `docker deploy` subcommand (experimental)](#top-level-docker-deploy-subcommand-experimental) | v19.03 | v20.10 |
| Removed | [`docker stack deploy` using "dab" files (experimental)](#docker-stack-deploy-using-dab-files-experimental) | v19.03 | v20.10 |
Expand Down Expand Up @@ -737,7 +737,8 @@ for the old option will be removed in a future release.

**Disabled by default in Release: v26.0**

**Target For Removal In Release: v27.0**
**Removed in Release: v28.2**


The image manifest [v2 schema 1](https://distribution.github.io/distribution/spec/deprecated-schema-v1/)
and "Docker Image v1" formats were deprecated in favor of the
Expand All @@ -748,23 +749,17 @@ formats.
These legacy formats should no longer be used, and users are recommended to
update images to use current formats, or to upgrade to more current images.
Starting with Docker v26.0, pulling these images is disabled by default, and
produces an error when attempting to pull the image:
support has been removed in v28.2. Attempting to pull a legacy image now
produces an error:

```console
$ docker pull ubuntu:10.04
Error response from daemon:
[DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release.
Docker Image Format v1 and Docker Image manifest version 2, schema 1 support has been removed.
Suggest the author of docker.io/library/ubuntu:10.04 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2.
More information at https://docs.docker.com/go/deprecated-image-specs/
```

An environment variable (`DOCKER_ENABLE_DEPRECATED_PULL_SCHEMA_1_IMAGE`) is
added in Docker v26.0 that allows re-enabling support for these image formats
in the daemon. This environment variable must be set to a non-empty value in
the daemon's environment (for example, through a [systemd override file](https://docs.docker.com/config/daemon/systemd/)).
Support for the `DOCKER_ENABLE_DEPRECATED_PULL_SCHEMA_1_IMAGE` environment variable
will be removed in Docker v27.0 after which this functionality is removed permanently.

### `docker engine` subcommands

**Deprecated in Release: v19.03**
Expand Down
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