New feature request: Add support for a containerId property

[niriak]

Please add a configuration option for the goal docker:start to provide a maven project property name the containerId is stored into. I'd like to run some integration tests using docker-java client with the container setup done by the docker-maven-plugin.

E.g. in the configurations's run section a new tag containerIdProperty:

<run>
   <containerIdProperty>containerId</containerIdProperty>
</run>

The maven project property containerId will contain the id of the new generated container. This property can now be used in the maven-failsafe-plugin to pass the containerId to Java.

[rhuss]

IMO that makes sense, maybe we can make it a bit more generic, too (don't like long property names so much ;-)

My suggestion would be

<run>
   <defineProperties>
       <containerId>myPropertyName</containerId>
       <!-- Maybe later other meta data like the "name" or "startDate", stuff which 
             is available from "docker inspect" -->
   </defineProperties>
</run>

We could also implicitly set properties after some conventions like docker.container.<alias | image name>.id automatically. I'm not so much a big fan of this because it couples the alias/image name to the code where it is used implicitly, so changing an name/alias would need to update the code, too but there is no direct reference whether the implicitly used property is ever used.

wdyt ?

[niriak]

The variant with the defineProperties tag sounds good to me.

[niriak]

Please add a property "containderId" to the list of specific properties which are exposed as Maven properties. E.g.: "docker.container.tomcat.containerId".

See also https://fabric8io.github.io/docker-maven-plugin/docker-start.html

[rhuss]

Sorry, forgot this issue. will be available in the next release.

[niriak]

Ups, got your answer to late. Already send a pull request.
Sorry, I'm a newbie - how to proceed now?

[rhuss]

No problem. The release is underway, you will be able to use 0.15.5 in about half an hour.

[niriak]

Thanks a lot!