Fabric8 Maven Plugin - How to pass --rm into build options?

Question

We are using io.fabric8:docker-maven-plugin:0.27.2 to build our docker images.

Just wondering how to pass rm into buildoptions? I want to clear all the intermediate (<none>) images after successfully building them - using the mvn docker:build command

REPOSITORY            TAG       IMAGE ID         CREATED             SIZE
myproject/baseimage   latest    baa18e544738     3 days ago          1.53GB
<none>                <none>    c98ecb5bc381     3 days ago          784MB
<none>                <none>    14d3f81c4bc0     4 days ago          533MB
<none>                <none>    9b07174fc67a     4 days ago          532MB

I tried to pass something like this.

<buildoptions>
   <rm>true</rm>
</buildoptions>

equivalent of:

docker build --rm -f Dockerfile -t myproject/baseImage:latest .

The documentation is not very clear -> http://dmp.fabric8.io/#build-configuration

Full Configuration of pom.xml:

<build>
    <plugins>
        <plugin>
            <groupId>io.fabric8</groupId>
            <artifactId>docker-maven-plugin</artifactId>
            <version>0.27.2</version>
            <extensions>true</extensions>
            <configuration>
                <verbose>true</verbose>
                <images>
                    <image>
                        <name>myproject/baseimage</name>
                        <build>
                            <tags>
                                <tag>latest</tag>
                            </tags>
                            <dockerFile>${project.basedir}/Dockerfile</dockerFile>
                            <buildOptions>
                                <rm>true</rm>
                            </buildOptions>
                        </build>
                    </image>
                </images>
            </configuration>
            <executions>
                <execution>
                    <id>docker:build</id>
                    <phase>package</phase>
                    <goals>
                        <goal>build</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

I tried a bunch of things including passing the same variable in maven properties. But nothing worked.

<docker.buildoptions.rm>true</docker.buildoptions.rm>

Any help is greatly appreciated!

Answer 1

As mentioned in documentation, there is an enum cleanup which removes dangling (untagged) images after each build (including any containers created from them). It can be set to true, false and try which tries to remove the old image, but doesn’t fail the build if this is not possible because e.g. the image is still used by a running container. You can set it in your build configuration like:

<build>
   <from>${image}</from>
   <labels>
      <dmp.version>${project.version}</dmp.version>
      <dmp.name>${project.artifactId}</dmp.name>
   </labels>
   <assembly>
      <descriptor>assembly.xml</descriptor>
   </assembly>

   ...

   <cleanup>true</cleanup>  
</build>