estafette-extension-docker

This extension allows you to build, push and tag docker images

• Usage
• Actions
• Parameters

Usage

Using this extension we can build, push and tag our container images.

bake:
    image: extensions/docker:stable
    action: build
    repositories:
    - eu.gcr.io/travix-com

push-to-docker-registry:
    image: extensions/docker:stable
    action: push
    repositories:
    - eu.gcr.io/travix-com
    when:
    status == 'succeeded' &&
    branch == 'master'
    
tag-container-image:
    image: extensions/docker:stable
    action: tag
    repositories:
        - eu.gcr.io/travix-com
    tags:
        - stable
        - latest    

Actions

The docker extension supports the following actions: build, push, tag. For pushing and tagging containers it uses the credentials and trusted images configuration in the Estafette server to get access to Docker registry credentials automatically

build

bake:
  image: extensions/docker:stable
  action: build
  no-cache: '< bool | false >'
  expand-variables: '< bool | true >'
  container: '< string | ESTAFETTE_GIT_NAME >'
  repositories:
  - estafette
  path: '< string | . >'
  dockerfile: '< string | Dockerfile >'
  copy:
  - < string | copies Dockerfile by default >
  - /etc/ssl/certs/ca-certificates.crt

The no-cache options ensures that no previous container built for your branch gets used, but it absolutely uses the latest version of the image in your FROM statement.

The expand-variables option allows you to turn off variable expansion, in case you use $PATH or another frequently set variable in your Dockerfile.

A minimal version when using all defaults looks like:

bake:
  image: extensions/docker:stable
  action: build
  repositories:
  - estafette

If you'd like to avoid having a separate Dockerfile you can inline it as well.

bake:
    image: extensions/docker:stable
    action: build
    inline: |
      FROM scratch
      COPY ca-certificates.crt /etc/ssl/certs/
      COPY ${ESTAFETTE_GIT_NAME} /
      ENTRYPOINT ["/${ESTAFETTE_GIT_NAME}"]
    repositories:
    - estafette
    path: ./publish
    copy:
    - /etc/ssl/certs/ca-certificates.crt

push

push:
  image: extensions/docker:stable
  action: push
  container: '< string | ESTAFETTE_GIT_NAME >'
  repositories:
  - estafette
  tags:
  - < string | tags with ESTAFETTE_BUILD_VERSION by default and is always pushed >
  - dev

tag

To later on tag a specific version with another tag - for example to promote a dev version to stable you can use the docker extension to tag that version with other tags:

tag:
  image: extensions/docker:dev
  action: tag
  container: '< string | ESTAFETTE_GIT_NAME >'
  repositories:
  - estafette
  tags:
  - stable
  - latest

Parameters

Parameter	Description	Allowed values	Default value
action	Any of the following actions: build, push, tag, history.	build, push, tag
repositories	List of the repositories the image needs to be pushed to or tagged in
container	Name of the container to build, defaults to app label if present		labels: app:
tag	Tag for an image to show history for
tags	List of tags the image needs to receive
path	Directory to build docker container from, defaults to current working directory.		Current Directory
dockerfile	Dockerfile to build, defaults to Dockerfile		Dockerfile
inlineDockerfile	Dockerfile to build inlined
copy	List of files or directories to copy into the build directory
args	List of build arguments to pass to the build
pushVersionTag	By default the version tag is pushed, so it can be promoted with a release, but if you don't want it you can disable it via this flag	true, false	true
versionTagPrefix	A prefix to add to the version tag so promoting different containers originating from the same pipeline is possible
versionTagSuffix	A suffix to add to the version tag so promoting different containers originating from the same pipeline is possible
noCache	Indicates cache shouldn't be used when building the image	true, false	false
noCachePush	Indicates no dlc cache tag should be pushed when building the image	true, false	false
expandEnvironmentVariables	By default environment variables get replaced in the Dockerfile, use this flag to disable that behaviour"	true, false	true
dontExpand	Comma separate list of environment variable names that should not be expanded		PATH