Deprecated Engine Features

Deprecated Engine Features

The following list of features are deprecated in Engine.

-e and --email flags on docker login

Deprecated In Release: v1.11

Target For Removal In Release: v1.13

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

Target For Removal In Release: v1.13

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

Ambiguous event fields in API

Deprecated In Release: v1.10

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

Target For Removal In Release: v1.12

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

Target For Removal In Release: v1.12

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

Docker ps ‘before’ and ‘since’ options

Deprecated In Release: v1.10.0

Target For Removal In Release: v1.12

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

Command line short variant options

Deprecated In Release: v1.9

Target For Removal In Release: v1.11

The following short variant options are deprecated in favor of their long variants:

docker run -c (--cpu-shares)
docker build -c (--cpu-shares)
docker create -c (--cpu-shares)

Driver Specific Log Tags

Deprecated In Release: v1.9

Target For Removal In Release: v1.11

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.

docker --log-driver=syslog --log-opt tag="{{.ImageName}}/{{.Name}}/{{.ID}}"

LXC built-in exec driver

Deprecated In Release: v1.8

Removed In Release: v1.10

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

Removed In Release: 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

Interacting with V1 registries

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 disabled by default, this signals the intent to deprecate the v1 protocol.

Docker Content Trust ENV passphrase variables name change

Deprecated In Release: v1.9

Target For Removal In Release: v1.10

As of 1.9, Docker Content Trust Offline key will be renamed to Root key and the Tagging key will be renamed to Repository key. Due to this renaming, we’re also changing the corresponding environment variables

• DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE will now be named DOCKER_CONTENT_TRUST_ROOT_PASSPHRASE
• DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE will now be named DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE