Angular Integration into maven build, CLEAN, INSTALL, TEST

Angular UI pom.xml

    <build>
        <sourceDirectory>src/app</sourceDirectory>
        <resources>
            <resource>
                <directory>src</directory>
            </resource>
            <resource>
                <directory>e2e</directory>
            </resource>
        </resources>
        <!-- DELETE everything in case of maven clean -->
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>dist</directory>
                        </fileset>
                        <fileset>
                            <directory>node_modules</directory>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>
            <!-- INSTALL everything -->
            <plugin>
                <artifactId>exec-maven-plugin</artifactId>
                <groupId>org.codehaus.mojo</groupId>
                <version>3.0.0</version>
                <executions>
                    <execution>
                        <id>npm install</id>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <phase>generate-resources</phase>
                        <configuration>
                            <executable>npm</executable>
                            <arguments>
                                <argument>install</argument>
                            </arguments>
                        </configuration>
                    </execution>
                    <!-- BUILD Web Jar for Spring Boot -->
                    <execution>
                        <id>angular-cli build</id>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <phase>compile</phase>
                        <configuration>
                            <executable>ng</executable>
                            <arguments>
                                <argument>build</argument>
                                <argument>--base-href</argument>
                                <argument>/ui/</argument>
                                <argument>--output-path</argument>
                                <argument>${project.build.outputDirectory}/META-INF/resources/webjars/${project.artifactId}/${project.version}</argument>
                            </arguments>
                        </configuration>
                    </execution>
                    <!-- RUN TESTS -->
                    <execution>
                        <id>angular-cli test</id>
                        <goals>
                            <goal>exec</goal>
                        </goals>
                        <phase>test</phase>
                        <configuration>
                            <executable>ng</executable>
                            <arguments>
                                <argument>test</argument>
                                <argument>--watch=false</argument>
                                <argument>--code-coverage</argument>
                                <argument>--browsers=ChromeHeadless</argument>
                                <!--
                                <argument>--no-sandbox</argument>
                                -->
                            </arguments>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>