title: mvn docker:stop not called after integration test
body: <p>pom.xml:</p>
  
  <pre><code>&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt;
    &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
    &lt;dependencies&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;org.apache.kafka&lt;/groupId&gt;
        &lt;artifactId&gt;kafka-clients&lt;/artifactId&gt;
        &lt;version&gt;1.0.0&lt;/version&gt;
      &lt;/dependency&gt;
    &lt;/dependencies&gt;
    &lt;build&gt;
      &lt;plugins&gt;
        &lt;plugin&gt;
          &lt;groupId&gt;io.fabric8&lt;/groupId&gt;
          &lt;artifactId&gt;docker-maven-plugin&lt;/artifactId&gt;
          &lt;version&gt;0.23.0&lt;/version&gt;
          &lt;configuration&gt;
            &lt;keepContainer&gt;false&lt;/keepContainer&gt;
            &lt;removeVolumes&gt;true&lt;/removeVolumes&gt;
            &lt;images&gt;
              &lt;image&gt;
                &lt;alias&gt;zookeeper&lt;/alias&gt;
                &lt;name&gt;jplock/zookeeper:3.4.6&lt;/name&gt;
                &lt;run&gt;
                  &lt;ports&gt;
                    &lt;port&gt;2181:2181&lt;/port&gt;
                  &lt;/ports&gt;
                  &lt;log&gt;
                    &lt;prefix&gt;ZOOKEEPER&lt;/prefix&gt;
                    &lt;color&gt;yellow&lt;/color&gt;
                  &lt;/log&gt;
                &lt;/run&gt;
              &lt;/image&gt;
              &lt;image&gt;
                &lt;alias&gt;kafka&lt;/alias&gt;
                &lt;name&gt;wurstmeister/kafka:1.0.0&lt;/name&gt;
                &lt;run&gt;
                  &lt;links&gt;
                    &lt;link&gt;zookeeper:zookeeper&lt;/link&gt;
                  &lt;/links&gt;
                  &lt;ports&gt;
                    &lt;port&gt;9092:9092&lt;/port&gt;
                  &lt;/ports&gt;
                  &lt;env&gt;
                    &lt;KAFKA_ADVERTISED_HOST_NAME&gt;127.0.0.1&lt;/KAFKA_ADVERTISED_HOST_NAME&gt;
                    &lt;KAFKA_ADVERTISED_PORT&gt;9092&lt;/KAFKA_ADVERTISED_PORT&gt;
                    &lt;KAFKA_CREATE_TOPICS&gt;test:3:1&lt;/KAFKA_CREATE_TOPICS&gt;
                    &lt;KAFKA_ZOOKEEPER_CONNECT&gt;zookeeper:2181&lt;/KAFKA_ZOOKEEPER_CONNECT&gt;
                    &lt;KAFKA_BROKER_ID&gt;999&lt;/KAFKA_BROKER_ID&gt;
                  &lt;/env&gt;
                  &lt;log&gt;
                    &lt;prefix&gt;KAFKA&lt;/prefix&gt;
                    &lt;color&gt;yellow&lt;/color&gt;
                  &lt;/log&gt;
                &lt;/run&gt;
              &lt;/image&gt;
            &lt;/images&gt;
          &lt;/configuration&gt;
          &lt;executions&gt;
            &lt;execution&gt;
              &lt;id&gt;start&lt;/id&gt;
              &lt;phase&gt;pre-integration-test&lt;/phase&gt;
              &lt;goals&gt;
                &lt;goal&gt;build&lt;/goal&gt;
                &lt;goal&gt;start&lt;/goal&gt;
              &lt;/goals&gt;
            &lt;/execution&gt;
            &lt;execution&gt;
              &lt;id&gt;stop&lt;/id&gt;
              &lt;phase&gt;post-integration-test&lt;/phase&gt;
              &lt;goals&gt;
                &lt;goal&gt;stop&lt;/goal&gt;
                &lt;goal&gt;remove&lt;/goal&gt;
              &lt;/goals&gt;
            &lt;/execution&gt;
          &lt;/executions&gt;
        &lt;/plugin&gt;
        &lt;plugin&gt;
          &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
          &lt;artifactId&gt;maven-failsafe-plugin&lt;/artifactId&gt;
          &lt;version&gt;2.20.1&lt;/version&gt;
          &lt;executions&gt;
            &lt;execution&gt;
              &lt;goals&gt;
                &lt;goal&gt;integration-test&lt;/goal&gt;
                &lt;goal&gt;verify&lt;/goal&gt;
              &lt;/goals&gt;
            &lt;/execution&gt;
          &lt;/executions&gt;
          &lt;configuration&gt;
            &lt;environmentVariables&gt;
              &lt;KAFKA_ADVERTISED_HOST_NAME&gt;127.0.0.1&lt;/KAFKA_ADVERTISED_HOST_NAME&gt;
              &lt;KAFKA_ADVERTISED_PORT&gt;9092&lt;/KAFKA_ADVERTISED_PORT&gt;
              &lt;KAFKA_TOPICS&gt;test&lt;/KAFKA_TOPICS&gt;
              &lt;KAFKA_CREATE_TOPICS&gt;test:3:1&lt;/KAFKA_CREATE_TOPICS&gt;
              &lt;KAFKA_ZOOKEEPER_CONNECT&gt;zookeeper:2181&lt;/KAFKA_ZOOKEEPER_CONNECT&gt;
              &lt;KAFKA_BROKER_ID&gt;999&lt;/KAFKA_BROKER_ID&gt;
            &lt;/environmentVariables&gt;
          &lt;/configuration&gt;
        &lt;/plugin&gt;
      &lt;/plugins&gt;
    &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>After running <code>mvn integration-test</code>, I found the docker containers still running by <code>docker ps</code>. I have to run <code>mvn docker:stop</code> to stop and remove them manually. But <code>mvn verify</code> can stop and remove docker containers automatically. Why? Anyone can help? Thanks</p>