SpringDoc OpenAPI download tomcat port configuration for integration test phase

springdoc-tomcat-pom.xml

<!-- Identify a free port for the spring boot integration test phase -->
<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>build-helper-maven-plugin</artifactId>
  <version>3.2.0</version>
  <executions>
    <execution>
      <id>reserve-tomcat-port</id>
      <goals><goal>reserve-network-port</goal></goals>
      <phase>process-resources</phase>
      <configuration>
        <portNames><portName>tomcat.http.port</portName></portNames>
      </configuration>
    </execution>
  </executions>
</plugin>
 
<!-- Spring boot helper plugin starting and stopping the Spring Boot app -->
<plugin>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-maven-plugin</artifactId>
  <version>${spring.boot.version}</version>
  <configuration><jvmArguments>-Dspring.application.admin.enabled=true</jvmArguments></configuration>
  <executions>
    <execution>
      <id>pre-integration-test</id>
      <goals><goal>start</goal></goals>Ursprünglichen API Entwicklung             <configuration>
        <arguments><argument>--server.port=${tomcat.http.port}</argument></arguments>
      </configuration>
    </execution>
    <execution>
      <id>post-integration-test</id>
      <goals><goal>stop</goal></goals>
    </execution>
  </executions>
</plugin>