PHP Docker plugin

PHP Docker plugin is a plugin for composer that helps build and push docker images. It is very useful for continuous integration. This plugin allow you to define image name, compute tags and generate reports.

When you use this plugin you still need Dockerfile. The plugin only simplified automation build!

Basic usage

If you already have Dockerfile and can build image manually just install plugin and build image immediately and push it to docker registry

php composer.phar require bukharovsi/docker_plugin
php composer.phar docker:build
php composer.phar docker:push

You will get docker image with tag: <your_project_name>:<your_project_version>

Advanced usage

How to change project defaults?

Defaults can be changed in composer.json and with console arguments

Change project defaults in composer.json

define in composer.json extra section:

"extra": {
    "docker": {
          "name": "wine_the_pooh.com/honey",
          "version": "1.0",
          "dockerfile": "Dockerfile",
          "workingdirectory": "."
    }
}

all definitions are optional

Change project defaults with console arguments

all arguments are optional

php composer.phar docker:build --name wine_the_pooh.com --tag latest --dockerfile Dockerfile --workingdirectory /var/www/wine_the_pooh

Getting image version from git

If you are using Git for version control or git flow you can generate image tag based on current Git branch or Git tag. For using this feature specify "version":"@vcs" in composer.json or add --tag @vcs to composer docker:build and composer docker:push command How does Git tag transforms to Docker tag?

Git branch	Docker tag
master	latest, (*if commit has a git tag then it add docker tag that will be equals current git tag)
dev, develop, development	dev
any_other_branch	any_other_branch, Commit SHA

Integration with Teamcity

Docker plugin can notify Teamcity about built image versions. This plugin use teamcity environment variables

• env.BuildTag
• env.BuildTag.1
• env.BuildTag.2
• ...
• env.BuildTag.n

after running composer docker:build you can use %env.BuildTag% and other variables in your scripts