docker-buildx/docs.md

name	icon	description	authors	tags	containerImage	containerImageUrl	url
Docker Buildx	https://woodpecker-ci.org/img/logo.svg	plugin to build multiarch Docker images with buildx	Woodpecker Authors	docker image container build	woodpeckerci/plugin-docker-buildx	https://hub.docker.com/r/woodpeckerci/plugin-docker-buildx	https://codeberg.org/woodpecker-plugins/docker-buildx

Woodpecker CI plugin to build multiarch Docker images with buildx. This plugin is a fork of thegeeklab/drone-docker-buildx which itself is a fork of drone-plugins/drone-docker.

Features

• Build without push
• Use custom registries
• Build based on existing tags when needed
• Push to multiple registries/repos

It will automatically generate buildkit configuration to use custom CA certificate if following conditions are met:

• Setting buildkit_config is not set
• Custom registry/logins value is provided
• File exists /etc/docker/certs.d/<registry-value>/ca.crt

NB! To mount custom CA you can use Woodpecker CI runner configuration environment WOODPECKER_BACKEND_DOCKER_VOLUMES with value /etc/ssl/certs:/etc/ssl/certs:ro,/etc/docker/certs.d:/etc/docker/certs.d:ro. And have created file /etc/docker/certs.d/<registry-value>/ca.crt with CA certificate on runner server host.

Settings

Settings Name	Default	Description
dry-run	false	disables docker push
repo	none	sets repository name for the image (can be a list)
username	none	sets username to authenticates with
password	none	sets password / token to authenticates with
email	none	sets email address to authenticates with
registry	https://index.docker.io/v1/	sets docker registry to authenticate with
dockerfile	Dockerfile	sets dockerfile to use for the image build
tag/tags	none	sets repository tags to use for the image
platforms	none	sets target platform for build

auto_tag

If set to true, it will use the default_tag ("latest") on tag event or default branch. If it's a tag event it will also assume sem versioning and add tags accordingly (x, x.x and x.x.x). If it's not a tag event, and no default branch, automated tags are skipped.

Examples

  publish-next-agent:
    image: woodpeckerci/plugin-docker-buildx
    secrets: [docker_username, docker_password]
    settings:
      repo: woodpeckerci/woodpecker-agent
      dockerfile: docker/Dockerfile.agent.multiarch
      platforms: windows/amd64,darwin/amd64,darwin/arm64,freebsd/amd64,linux/amd64,linux/arm64/v8
      tag: next
    when:
      branch: ${CI_REPO_DEFAULT_BRANCH}
      event: push

  publish:
    image: woodpeckerci/plugin-docker-buildx
    settings:
      platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm64/v8,linux/ppc64le,linux/riscv64,linux/s390x
      repo: codeberg.org/${CI_REPO_OWNER}/hello
      registry: codeberg.org
      tags: latest
      username: ${CI_REPO_OWNER}
      password:
        from_secret: cb_token

  docker-build:
    image: woodpeckerci/plugin-docker-buildx
    settings:
      repo: codeberg.org/${CI_REPO_OWNER}/hello
      registry: codeberg.org
      dry_run: true
      output: type=oci,dest=${CI_REPO_OWNER}-hello.tar

Advanced Settings

Settings Name	Default	Description
mirror	none	sets a registry mirror to pull images
storage_driver	none	sets the docker daemon storage driver
storage_path	/var/lib/docker	sets the docker daemon storage path
bip	none	allows the docker daemon to bride ip address
mtu	none	sets docker daemon custom mtu setting
custom_dns	none	sets custom docker daemon dns server
custom_dns_search	none	sets custom docker daemon dns search domain
insecure	false	allows the docker daemon to use insecure registries
ipv6	false	enables docker daemon IPv6 support
experimental	false	enables docker daemon experimental mode
debug	false	enables verbose debug mode for the docker daemon
daemon_off	false	disables the startup of the docker daemon
buildkit_config	none	sets content of the docker buildkit TOML config
tags_file	none	overwrites tags option with values find in specified file
context	.	sets the path of the build context to use
auto_tag	false	generates tag names automatically based on git branch and git tag, tags supplied via tags are additionally added to the auto_tags without suffix
default_suffix"/auto_tag_suffix	none	generates tag names with the given suffix
default_tag	latest	overrides the default tag name used when generating with auto_tag enabled
label/labels	none	sets labels to use for the image in format <name>=<value>
default_labels/auto_labels	true	sets docker image labels based on git information
build_args	none	sets custom build arguments for the build
build_args_from_env	none	forwards environment variables as custom arguments to the build
quiet	false	enables suppression of the build output
target	none	sets the build target to use
cache_from	none	sets images to consider as cache sources
pull_image	true	enforces to pull base image at build time
compress	false	enables compression of the build context using gzip
config	none	sets content of the docker daemon json config
purge	true	enables cleanup of the docker environment at the end of a build
no_cache	false	disables the usage of cached intermediate containers
add_host	none	sets additional host:ip mapping
output	none	sets build output in format type=<type>[,<key>=<value>]
logins	none	option to log into multiple registries

Multi registry push example

Only supported with woodpecker >= 1.0.0 (next-da997fa3).

settings:
  repo: a6543/tmp,codeberg.org/6543/tmp
  tag: demo
  logins:
    - registry: https://index.docker.io/v1/
      username: a6543
      password:
        from_secret: docker_token
    - registry: https://codeberg.org
      username: "6543"
      password:
        from_secret: cb_token