In-build selenium-server to run your tests headless in any operating system.

In-build-selenium-server-with-dynamic-port-allocation-maven-profile.xml

    <profile>
            <id>selenium-tests</id>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.codehaus.mojo</groupId>
                        <artifactId>build-helper-maven-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>reserve-selenium-port</id>
                                <goals>
                                    <goal>reserve-network-port</goal>
                                </goals>
                                <phase>process-resources</phase>
                                <configuration>
                                    <portNames>
                                        <portName>selenium.standalone.server.port</portName>
                                    </portNames>
                                    <minPortNumber>4444</minPortNumber>
                                    <maxPortNumber>5000</maxPortNumber>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <artifactId>maven-resources-plugin</artifactId>
                        <version>3.0.2</version>
                        <executions>
                            <execution>
                                <id>copy-resources</id>
                                <phase>process-test-resources</phase>
                                <goals>
                                    <goal>copy-resources</goal>
                                </goals>
                                <configuration>
                                    <outputDirectory>${project.build.directory}/test-config</outputDirectory>
                                    <fileNameFiltering>true</fileNameFiltering>
                                    <resources>
                                        <resource>
                                            <directory>test</directory>
                                        </resource>
                                    </resources>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <groupId>com.google.code.maven-replacer-plugin</groupId>
                        <artifactId>replacer</artifactId>
                        <version>1.5.3</version>
                        <executions>
                            <execution>
                                <phase>process-test-resources</phase>
                                <goals>
                                    <goal>replace</goal>
                                </goals>
                            </execution>
                        </executions>
                        <configuration>
                            <file>target/test-config/selenium-config.json</file>
                            <replacements>
                                <replacement>
                                    <token>4444</token>
                                    <value>${selenium.standalone.server.port}</value>
                                </replacement>
                                <replacement>
                                    <token>selenium.webdriver</token>
                                    <value>${selenium.webdriver}</value>
                                </replacement>
                                <replacement>
                                    <token>selenium.baseUrl</token>
                                    <value>${selenium.baseUrl}</value>
                                </replacement>
                            </replacements>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>com.lazerycode.selenium</groupId>
                        <artifactId>driver-binary-downloader-maven-plugin</artifactId>
                        <version>1.0.14</version>
                        <configuration>
                            <rootStandaloneServerDirectory>target/selenium-server</rootStandaloneServerDirectory>
                            <downloadedZipFileDirectory>target/selenium-drivers</downloadedZipFileDirectory>
                            <sixtyFourBitBinaries>true</sixtyFourBitBinaries>
                            <onlyGetDriversForHostOperatingSystem>true</onlyGetDriversForHostOperatingSystem>
                            <overwriteFilesThatExist>false</overwriteFilesThatExist>
                            <useSystemProxy>true</useSystemProxy>
                            <customRepositoryMap>test/selenium-repositories.xml</customRepositoryMap>
                        </configuration>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>selenium</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <artifactId>maven-dependency-plugin</artifactId>
                        <executions>
                            <execution>
                                <phase>pre-integration-test</phase>
                                <goals>
                                    <goal>copy-dependencies</goal>
                                </goals>
                                <configuration>
                                    <includeArtifactIds>selenium-server-standalone</includeArtifactIds>
                                    <outputDirectory>${project.build.directory}/lib</outputDirectory>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <groupId>com.bazaarvoice.maven.plugins</groupId>
                        <artifactId>process-exec-maven-plugin</artifactId>
                        <version>0.8</version>
                        <executions>
                            <execution>
                                <id>start-jar</id>
                                <phase>pre-integration-test</phase>
                                <goals>
                                    <goal>start</goal>
                                </goals>
                                <configuration>
                                    <workingDir>lib</workingDir>
                                    <name>Selenium Server</name>
                                    <healthcheckUrl><!-- Properties from pom or maven-build-helper-plugin -->
                                        http://${selenium.standalone.server.hostname}:${selenium.standalone.server.port}/wd/hub
                                    </healthcheckUrl>
                                    <arguments>
                                        <argument>java</argument><!-- Properties below populated by driver-binary-downloader-maven-plugin -->
                                        <argument>-Dwebdriver.chrome.driver=${webdriver.chrome.driver}</argument>
                                        <argument>-jar</argument>
                                        <argument>
                                            ${project.build.directory}/lib/selenium-server-standalone-${selenium.standalone.server.version}.jar
                                        </argument>
                                        <argument>-port</argument>
                                        <argument>${selenium.standalone.server.port}</argument>
                                    </arguments>
                                </configuration>
                            </execution>
                            <execution>
                                <id>stop-jar-process</id>
                                <phase>post-integration-test</phase>
                                <goals>
                                    <goal>stop-all</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <groupId>org.codehaus.mojo</groupId>
                        <artifactId>exec-maven-plugin</artifactId>
                        <version>1.2.1</version>
                        <executions>
                            <execution>
                                <id>run-selenium-tests</id>
                                <phase>integration-test</phase>
                                <goals>
                                    <goal>exec</goal>
                                </goals>
                            </execution>
                        </executions>
                        <configuration>
                            <executable>${script.execution}runGrunt${script.extension}</executable>
                            <arguments>
                                <argument>selenium-tests</argument>
                            </arguments>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
            <dependencies>
                <dependency>
                    <groupId>org.seleniumhq.selenium</groupId>
                    <artifactId>selenium-server-standalone</artifactId>
                    <version>${selenium.standalone.server.version}</version>
                </dependency>
            </dependencies>
        </profile>