testcontainers_mysql_step4.java

@ClassRule
public static GenericContainer mysql = new GenericContainer(
  new ImageFromDockerfile("mysql-petclinic")
    .withDockerfileFromBuilder(dockerfileBuilder -> {
      ....
    })
  .withExposedPorts(3306)
  .withCreateContainerCmdModifier(
    new Consumer<CreateContainerCmd>() {   
     @Override
     public void accept(CreateContainerCmd createContainerCmd) {
       createContainerCmd.withPortBindings(
         new PortBinding(Ports.Binding.bindPort(3306), new ExposedPort(3306))
       );
    }
 })
 .waitingFor(Wait.forListeningPort());