community.docker.docker_image module – Manage docker images

Note

This module is part of the community.docker collection (version 3.4.7).

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.

Synopsis

  • Build, load or pull an image, making the image available for creating containers. Also supports tagging an image, pushing an image, and archiving an image to a .tar file.

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"

archive_path

path

Use with state present to archive an image to a .tar file.

build

dictionary

Specifies options used for building images.

args

dictionary

Provide a dictionary of key:value build arguments that map to Dockerfile ARG directive.

Docker expects the value to be a string. For convenience any non-string values will be converted to strings.

cache_from

list / elements=string

List of image names to consider as cache source.

container_limits

dictionary

A dictionary of limits applied to each container created by the build process.

cpusetcpus

string

CPUs in which to allow execution.

For example, 0-3 or 0,1.

cpushares

integer

CPU shares (relative weight).

memory

integer

Set memory limit for build.

memswap

integer

Total memory (memory + swap).

Use -1 to disable swap.

dockerfile

string

Use with state present and source build to provide an alternate name for the Dockerfile to use when building an image.

This can also include a relative path (relative to path).

etc_hosts

dictionary

Extra hosts to add to /etc/hosts in building containers, as a mapping of hostname to IP address.

http_timeout

integer

Timeout for HTTP requests during the image build operation. Provide a positive integer value for the number of seconds.

network

string

The network to use for RUN build instructions.

nocache

boolean

Do not use cache when building an image.

Choices:

  • false ← (default)

  • true

path

path / required

Use with state ‘present’ to build an image. Will be the path to a directory containing the context and Dockerfile for building an image.

platform

string

added in community.docker 1.1.0

Platform in the format os[/arch[/variant]].

pull

boolean

When building an image downloads any updates to the FROM image in Dockerfile.

Choices:

  • false ← (default)

  • true

rm

boolean

Remove intermediate containers after build.

Choices:

  • false

  • true ← (default)

target

string

When building an image specifies an intermediate build stage by name as a final stage for the resulting image.

use_config_proxy

boolean

If set to true and a proxy configuration is specified in the docker client configuration (by default $HOME/.docker/config.json), the corresponding environment variables will be set in the container being built.

Choices:

  • false

  • true

ca_cert

aliases: 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.

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"

force_absent

boolean

Use with state absent to un-tag and remove all images matching the specified name.

Choices:

  • false ← (default)

  • true

force_source

boolean

Use with state present to build, load or pull an image (depending on the value of the source option) when the image already exists.

Choices:

  • false ← (default)

  • true

force_tag

boolean

Use with state present to force tagging an image.

Choices:

  • false ← (default)

  • true

load_path

path

Use with state present to load an image from a .tar file.

Set source to load if you want to load the image.

name

string / required

Image name. Name format will be one of: name, repository/name, registry_server:port/name. When pushing or pulling an image the name can optionally include the tag by appending :tag_name.

Note that image IDs (hashes) are only supported for state=absent, for state=present with source=load, and for state=present with source=local.

pull

dictionary

added in community.docker 1.3.0

Specifies options used for pulling images.

platform

string

When pulling an image, ask for this specific platform.

Note that this value is not used to determine whether the image needs to be pulled. This might change in the future in a minor release, though.

push

boolean

Push the image to the registry. Specify the registry as part of the name or repository parameter.

Choices:

  • false ← (default)

  • true

repository

string

Use with state present to tag the image.

Expects format repository:tag. If no tag is provided, will use the value of the tag parameter or latest.

If push=true, repository must either include a registry, or will be assumed to belong to the default registry (Docker Hub).

source

string

Determines where the module will try to retrieve the image from.

Use build to build the image from a Dockerfile. build.path must be specified when this value is used.

Use load to load the image from a .tar file. load_path must be specified when this value is used.

Use pull to pull the image from a registry.

Use local to make sure that the image is already available on the local docker daemon. This means that the module does not try to build, pull or load the image.

Choices:

  • "build"

  • "load"

  • "pull"

  • "local"

ssl_version

string

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

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

state

string

Make assertions about the state of an image.

When absent an image will be removed. Use the force option to un-tag and remove all images matching the provided name.

When present check if an image exists using the provided name and tag. If the image is not found or the force option is used, the image will either be pulled, built or loaded, depending on the source option.

Choices:

  • "absent"

  • "present" ← (default)

tag

string

Used to select an image when pulling. Will be added to the image when pushing, tagging or building. Defaults to latest.

If name parameter format is name:tag, then tag value from name will take precedence.

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, the module assumes this is always changed in check mode.

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

diff_mode

Support: none

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

Notes

Note

  • Building images is done using Docker daemon’s API. It is not possible to use BuildKit / buildx this way.

  • 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:
    name: pacur/centos-7
    source: pull
    # Select platform for pulling. If not specified, will pull whatever docker prefers.
    pull:
      platform: amd64

- name: Tag and push to docker hub
  community.docker.docker_image:
    name: pacur/centos-7:56
    repository: dcoppenhagan/myimage:7.56
    push: true
    source: local

- name: Tag and push to local registry
  community.docker.docker_image:
    # Image will be centos:7
    name: centos
    # Will be pushed to localhost:5000/centos:7
    repository: localhost:5000/centos
    tag: 7
    push: true
    source: local

- name: Add tag latest to image
  community.docker.docker_image:
    name: myimage:7.1.2
    repository: myimage:latest
    # As 'latest' usually already is present, we need to enable overwriting of existing tags:
    force_tag: true
    source: local

- name: Remove image
  community.docker.docker_image:
    state: absent
    name: registry.ansible.com/chouseknecht/sinatra
    tag: v1

- name: Build an image and push it to a private repo
  community.docker.docker_image:
    build:
      path: ./sinatra
    name: registry.ansible.com/chouseknecht/sinatra
    tag: v1
    push: true
    source: build

- name: Archive image
  community.docker.docker_image:
    name: registry.ansible.com/chouseknecht/sinatra
    tag: v1
    archive_path: my_sinatra.tar
    source: local

- name: Load image from archive and push to a private registry
  community.docker.docker_image:
    name: localhost:5000/myimages/sinatra
    tag: v1
    push: true
    load_path: my_sinatra.tar
    source: load

- name: Build image and with build args
  community.docker.docker_image:
    name: myimage
    build:
      path: /path/to/build/dir
      args:
        log_volume: /var/log/myapp
        listen_port: 8080
    source: build

- name: Build image using cache source
  community.docker.docker_image:
    name: myimage:latest
    build:
      path: /path/to/build/dir
      # Use as cache source for building myimage
      cache_from:
        - nginx:latest
        - alpine:3.8
    source: build

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: {}

stdout

string

added in community.docker 1.0.0

Docker build output when building an image.

Returned: success

Sample: ""

Authors

  • Pavel Antonov (@softzilla)

  • Chris Houseknecht (@chouseknecht)

  • Sorin Sbarnea (@ssbarnea)