community.docker.docker_image_pull module – Pull Docker images from registries

Note

This module is part of the community.docker collection (version 3.13.0).

It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.docker. You need further requirements to be able to use this module, see Requirements for details.

To use it in a playbook, specify: community.docker.docker_image_pull.

New in community.docker 3.6.0

Synopsis

  • Pulls a Docker image from a registry.

Requirements

The below requirements are needed on the host that executes this module.

  • Docker API >= 1.25

  • backports.ssl_match_hostname (when using TLS on Python 2)

  • paramiko (when using SSH with use_ssh_client=false)

  • pyOpenSSL (when using TLS)

  • pywin32 (when using named pipes on Windows 32)

  • requests

Parameters

Parameter

Comments

api_version

aliases: docker_api_version

string

The version of the Docker API running on the Docker Host.

Defaults to the latest version of the API supported by this collection and the docker daemon.

If the value is not specified in the task, the value of environment variable DOCKER_API_VERSION will be used instead. If the environment variable is not set, the default value will be used.

Default: "auto"

ca_path

aliases: ca_cert, tls_ca_cert, cacert_path

path

Use a CA certificate when performing server verification by providing the path to a CA certificate file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file ca.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

This option was called ca_cert and got renamed to ca_path in community.docker 3.6.0. The old name has been added as an alias and can still be used.

client_cert

aliases: tls_client_cert, cert_path

path

Path to the client’s TLS certificate file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file cert.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

client_key

aliases: tls_client_key, key_path

path

Path to the client’s TLS key file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file key.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

debug

boolean

Debug mode

Choices:

  • false ← (default)

  • true

docker_host

aliases: docker_url

string

The URL or Unix socket path used to connect to the Docker API. To connect to a remote host, provide the TCP connection string. For example, tcp://192.0.2.23:2376. If TLS is used to encrypt the connection, the module will automatically replace tcp in the connection URL with https.

If the value is not specified in the task, the value of environment variable DOCKER_HOST will be used instead. If the environment variable is not set, the default value will be used.

Default: "unix:///var/run/docker.sock"

name

string / required

Image name. Name format must be one of name, repository/name, or registry_server:port/name. - The name can optionally include the tag by appending :tag_name, or it can contain a digest by appending @hash:digest.

platform

string

Ask for this specific platform when pulling.

pull

string

Determines when to pull an image.

If always, will always pull the image.

If not_present, will only pull the image if no image of the name exists on the current Docker daemon, or if platform does not match.

Choices:

  • "always" ← (default)

  • "not_present"

ssl_version

string

Provide a valid SSL version number. Default value determined by SSL Python module.

If the value is not specified in the task, the value of environment variable DOCKER_SSL_VERSION will be used instead.

tag

string

Used to select an image when pulling. Defaults to latest.

If name parameter format is name:tag or image@hash:digest, then tag will be ignored.

Default: "latest"

timeout

integer

The maximum amount of time in seconds to wait on a response from the API.

If the value is not specified in the task, the value of environment variable DOCKER_TIMEOUT will be used instead. If the environment variable is not set, the default value will be used.

Default: 60

tls

boolean

Secure the connection to the API by using TLS without verifying the authenticity of the Docker host server. Note that if validate_certs is set to true as well, it will take precedence.

If the value is not specified in the task, the value of environment variable DOCKER_TLS will be used instead. If the environment variable is not set, the default value will be used.

Choices:

  • false ← (default)

  • true

tls_hostname

string

When verifying the authenticity of the Docker Host server, provide the expected name of the server.

If the value is not specified in the task, the value of environment variable DOCKER_TLS_HOSTNAME will be used instead. If the environment variable is not set, the default value will be used.

Note that this option had a default value localhost in older versions. It was removed in community.docker 3.0.0.

use_ssh_client

boolean

added in community.docker 1.5.0

For SSH transports, use the ssh CLI tool instead of paramiko.

Choices:

  • false ← (default)

  • true

validate_certs

aliases: tls_verify

boolean

Secure the connection to the API by using TLS and verifying the authenticity of the Docker host server.

If the value is not specified in the task, the value of environment variable DOCKER_TLS_VERIFY will be used instead. If the environment variable is not set, the default value will be used.

Choices:

  • false ← (default)

  • true

Attributes

Attribute

Support

Description

action_group

Action groups: community.docker.docker, docker

Use group/docker or group/community.docker.docker in module_defaults to set defaults for this module.

check_mode

Support: partial

When trying to pull an image with pull=always, the module assumes this is always changed in check mode.

When check mode is combined with diff mode, the pulled image’s ID is always shown as unknown in the diff.

Can run in check_mode and return changed status prediction without modifying target.

diff_mode

Support: full

Will return details on what has changed (or possibly needs changing in check_mode), when in diff mode.

Notes

Note

See Also

See also

community.docker.docker_image_pull

Pull Docker images from registries.

community.docker.docker_image_remove

Remove Docker images.

community.docker.docker_image_tag

Tag Docker images with new names and/or tags.

Examples

- name: Pull an image
  community.docker.docker_image_pull:
    name: pacur/centos-7
    # Select platform for pulling. If not specified, will pull whatever docker prefers.
    platform: amd64

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key

Description

image

dictionary

Image inspection results for the affected image.

Returned: success

Sample: {}

Authors

  • Felix Fontein (@felixfontein)