community.docker.docker_image_build module – Build Docker images using Docker buildx

Note

This module is part of the community.docker collection (version 3.9.0).

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_build.

New in community.docker 3.6.0

Synopsis

• This module allows you to build Docker images using Docker’s buildx plugin (BuildKit).

Requirements

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

• Docker CLI with Docker buildx plugin

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"
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.
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.
cache_from list / elements=string	List of image names to consider as cache source.
cli_context string	The Docker CLI context to use.
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.
docker_cli path	Path to the Docker CLI. If not provided, will search for Docker CLI on the PATH.
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"
dockerfile string	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.
labels dictionary	Dictionary of key value pairs.
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) and names with digest cannot be used.
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	The path for the build environment.
platform string	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
rebuild string	Defines the behavior of the module if the image to build (as specified in name and tag) already exists. Choices: "never" ← (default) "always"
shm_size string	Size of /dev/shm in format <number>[<unit>]. Number is positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte). Omitting the unit defaults to bytes. If you omit the size entirely, Docker daemon uses 64M.
tag string	Tag for the image name name that is to be tagged. If name‘s format is name:tag, then the tag value from name will take precedence. Default: "latest"
target string	When building an image specifies an intermediate build stage by name as a final stage for the resulting image.
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.
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: full	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

• 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_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 directly calls the Docker CLI program.

See Also

See also

community.docker.docker_image_push

Push Docker images to registries.

community.docker.docker_image_tag

Tag Docker images with new names and/or tags.

Examples

- name: Build Python 3.12 image
  community.docker.docker_image_build:
    name: localhost/python/3.12:latest
    path: /home/user/images/python
    dockerfile: Dockerfile-3.12

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)

Collection links

• Issue Tracker
• Repository (Sources)
• Submit a bug report
• Request a feature
• Communication