---
 aliases: ["/engine/misc/deprecated/"]
 title: "Deprecated Engine Features"
 description: "Deprecated Features."

 keywords: "docker, documentation, about, technology, deprecate"

 ---

 <!-- This file is maintained within the docker/docker Github
      repository at https://github.com/docker/docker/. Make all
      pull requests against that repo. If you see this file in
      another repository, consider it read-only there, as it will
      periodically be overwritten by the definitive file. Pull
      requests which include edits to this file in other repositories
      will be rejected.
 -->
 

 # Deprecated Engine Features

 The following list of features are deprecated in Engine.

 To learn more about Docker Engine's deprecation policy,

 see [Feature Deprecation Policy](https://docs.docker.com/engine/#feature-deprecation-policy).

 
 ### Top-level network properties in NetworkSettings
 

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 When inspecting a container, `NetworkSettings` contains top-level information
 about the default ("bridge") network;
 
 `EndpointID`, `Gateway`, `GlobalIPv6Address`, `GlobalIPv6PrefixLen`, `IPAddress`,
 `IPPrefixLen`, `IPv6Gateway`, and `MacAddress`.
 
 These properties are deprecated in favor of per-network properties in
 `NetworkSettings.Networks`. These properties were already "deprecated" in
 docker 1.9, but kept around for backward compatibility.
 
 Refer to [#17538](https://github.com/docker/docker/pull/17538) for further
 information.
 

 ## `filter` param for `/images/json` endpoint

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 The `filter` param to filter the list of image by reference (name or name:tag) is now implemented as a regular filter, named `reference`.

 ### `repository:shortid` image references

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 `repository:shortid` syntax for referencing images is very little used, collides with tag references can be confused with digest references.

 ### `docker daemon` subcommand

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 The daemon is moved to a separate binary (`dockerd`), and should be used instead.
 

 ### Duplicate keys with conflicting values in engine labels

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 Duplicate keys with conflicting values have been deprecated. A warning is displayed
 in the output, and an error will be returned in the future.
 

 ### `MAINTAINER` in Dockerfile

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 
 `MAINTAINER` was an early very limited form of `LABEL` which should be used instead.
 
 ### API calls without a version

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 API versions should be supplied to all API calls to ensure compatibility with
 future Engine versions. Instead of just requesting, for example, the URL
 `/containers/json`, you must now request `/v1.25/containers/json`.
 
 ### Backing filesystem without `d_type` support for overlay/overlay2

 **Deprecated In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 **Target For Removal In Release: v17.12**

 
 The overlay and overlay2 storage driver does not work as expected if the backing
 filesystem does not support `d_type`. For example, XFS does not support `d_type`
 if it is formatted with the `ftype=0` option.
 
 Please also refer to [#27358](https://github.com/docker/docker/issues/27358) for

 further information.

 ### Three arguments form in `docker import`

 **Deprecated In Release: [v0.6.7](https://github.com/docker/docker/releases/tag/v0.6.7)**
 

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 The `docker import` command format `file|URL|- [REPOSITORY [TAG]]` is deprecated since November 2013. It's no more supported.

 ### `-h` shorthand for `--help`
 

 **Deprecated In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 **Target For Removal In Release: v17.09**

 
 The shorthand (`-h`) is less common than `--help` on Linux and cannot be used
 on all subcommands (due to it conflicting with, e.g. `-h` / `--hostname` on
 `docker create`). For this reason, the `-h` shorthand was not printed in the

 "usage" output of subcommands, nor documented, and is now marked "deprecated".

 ### `-e` and `--email` flags on `docker login`

 **Deprecated In Release: [v1.11.0](https://github.com/docker/docker/releases/tag/v1.11.0)**

 **Target For Removal In Release: v17.06**

 
 The docker login command is removing the ability to automatically register for an account with the target registry if the given username doesn't exist. Due to this change, the email flag is no longer required, and will be deprecated.
 

 ### Separator (`:`) of `--security-opt` flag on `docker run`

 **Deprecated In Release: [v1.11.0](https://github.com/docker/docker/releases/tag/v1.11.0)**

 **Target For Removal In Release: v17.06**

 The flag `--security-opt` doesn't use the colon separator(`:`) anymore to divide keys and values, it uses the equal symbol(`=`) for consistency with other similar flags, like `--storage-opt`.

 ### `/containers/(id or name)/copy` endpoint
 

 **Deprecated In Release: [v1.8.0](https://github.com/docker/docker/releases/tag/v1.8.0)**

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 The endpoint `/containers/(id or name)/copy` is deprecated in favor of `/containers/(id or name)/archive`.
 

 ### Ambiguous event fields in API

 **Deprecated In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**

 
 The fields `ID`, `Status` and `From` in the events API have been deprecated in favor of a more rich structure.
 See the events API documentation for the new format.
 

 ### `-f` flag on `docker tag`

 **Deprecated In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 To make tagging consistent across the various `docker` commands, the `-f` flag on the `docker tag` command is deprecated. It is not longer necessary to specify `-f` to move a tag from one image to another. Nor will `docker` generate an error if the `-f` flag is missing and the specified tag is already in use.
 

 ### HostConfig at API container start

 **Deprecated In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 Passing an `HostConfig` to `POST /containers/{name}/start` is deprecated in favor of
 defining it at container creation (`POST /containers/create`).
 

 ### `--before` and `--since` flags on `docker ps`

 
 **Deprecated In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**
 

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 The `docker ps --before` and `docker ps --since` options are deprecated.
 Use `docker ps --filter=before=...` and `docker ps --filter=since=...` instead.

 ### `--automated` and `--stars` flags on `docker search`

 **Deprecated in Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 **Target For Removal In Release: v17.09**

 
 The `docker search --automated` and `docker search --stars` options are deprecated.
 Use `docker search --filter=is-automated=...` and `docker search --filter=stars=...` instead.

 ### Driver Specific Log Tags

 **Deprecated In Release: [v1.9.0](https://github.com/docker/docker/releases/tag/v1.9.0)**

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 Log tags are now generated in a standard way across different logging drivers.
 Because of which, the driver specific log tag options `syslog-tag`, `gelf-tag` and
 `fluentd-tag` have been deprecated in favor of the generic `tag` option.
 

 ```bash
 {% raw %}
 docker --log-driver=syslog --log-opt tag="{{.ImageName}}/{{.Name}}/{{.ID}}"
 {% endraw %}
 ```

 ### LXC built-in exec driver

 **Deprecated In Release: [v1.8.0](https://github.com/docker/docker/releases/tag/v1.8.0)**

 **Removed In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**

 The built-in LXC execution driver, the lxc-conf flag, and API fields have been removed.

 ### Old Command Line Options

 **Deprecated In Release: [v1.8.0](https://github.com/docker/docker/releases/tag/v1.8.0)**

 **Removed In Release: [v1.10.0](https://github.com/docker/docker/releases/tag/v1.10.0)**

 The flags `-d` and `--daemon` are deprecated in favor of the `daemon` subcommand:
 
     docker daemon -H ...
 

 The following single-dash (`-opt`) variant of certain command line options

 are deprecated and replaced with double-dash options (`--opt`):
 
     docker attach -nostdin
     docker attach -sig-proxy
     docker build -no-cache
     docker build -rm
     docker commit -author
     docker commit -run
     docker events -since
     docker history -notrunc
     docker images -notrunc
     docker inspect -format
     docker ps -beforeId
     docker ps -notrunc
     docker ps -sinceId
     docker rm -link
     docker run -cidfile
     docker run -dns
     docker run -entrypoint
     docker run -expose
     docker run -link
     docker run -lxc-conf
     docker run -n
     docker run -privileged
     docker run -volumes-from
     docker search -notrunc
     docker search -stars
     docker search -t
     docker search -trusted
     docker tag -force
 

 The following double-dash options are deprecated and have no replacement:

     docker run --cpuset

     docker run --networking
     docker ps --since-id
     docker ps --before-id
     docker search --trusted

 **Deprecated In Release: [v1.5.0](https://github.com/docker/docker/releases/tag/v1.5.0)**
 

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 
 The single-dash (`-help`) was removed, in favor of the double-dash `--help`
 
     docker -help
     docker [COMMAND] -help
 

 ### `--run` flag on docker commit
 
 **Deprecated In Release: [v0.10.0](https://github.com/docker/docker/releases/tag/v0.10.0)**
 

 **Removed In Release: [v1.13.0](https://github.com/docker/docker/releases/tag/v1.13.0)**

 The flag `--run` of the docker commit (and its short version `-run`) were deprecated in favor

 of the `--changes` flag that allows to pass `Dockerfile` commands.
 

 ### Interacting with V1 registries
 

 **Disabled By Default In Release: v17.06**

 **Target For Removal In Release: v17.12**

 
 Version 1.9 adds a flag (`--disable-legacy-registry=false`) which prevents the
 docker daemon from `pull`, `push`, and `login` operations against v1
 registries.  Though enabled by default, this signals the intent to deprecate
 the v1 protocol.
 
 Support for the v1 protocol to the public registry was removed in 1.13. Any
 mirror configurations using v1 should be updated to use a
 [v2 registry mirror](https://docs.docker.com/registry/recipes/mirror/).

 ### Docker Content Trust ENV passphrase variables name change

 **Deprecated In Release: [v1.9.0](https://github.com/docker/docker/releases/tag/v1.9.0)**

 **Removed In Release: [v1.12.0](https://github.com/docker/docker/releases/tag/v1.12.0)**

 Since 1.9, Docker Content Trust Offline key has been renamed to Root key and the Tagging key has been renamed to Repository key. Due to this renaming, we're also changing the corresponding environment variables

 - DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE is now named DOCKER_CONTENT_TRUST_ROOT_PASSPHRASE
 - DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE is now named DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE