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

Note

This module is part of the community.docker collection (version 3.13.3).

You might already have this collection installed if you are using the ansible package. 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

Connect to the Docker daemon by providing parameters with each task or by defining environment variables. You can define DOCKER_HOST, DOCKER_TLS_HOSTNAME, DOCKER_API_VERSION, DOCKER_CERT_PATH, DOCKER_SSL_VERSION, DOCKER_TLS, DOCKER_TLS_VERIFY and DOCKER_TIMEOUT. If you are using docker machine, run the script shipped with the product that sets up the environment. It will set these variables for you. See https://docs.docker.com/machine/reference/env/ for more details.
This module does not use the Docker SDK for Python to communicate with the Docker daemon. It uses code derived from the Docker SDK or Python that is included in this collection.

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)

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

Synopsis 

Requirements 

Parameters 

Attributes 

Notes 

See Also 

Examples 

Return Values 

Authors

Collection links