Spotify docker客户端无法在一次操作中启动容器并执行命令?

我有下面的代码,它使我能够启动Docker容器,然后运行一个附加了Stdout和Stderr的命令。这里的问题是它会启动容器,但在我能够在容器内执行命令之前,它当然会退出容器。如何启动容器并在容器内执行命令(在本例中) ls )并保持stdout和stderr连接,而不获取“无法在停止状态下执行”错误消息?

final String IMAGE = "centos";

final DockerClient docker = new 
DefaultDockerClient("unix:///var/run/docker.sock");

docker.pull(IMAGE);

final ContainerConfig containerConfig = ContainerConfig.builder()
    .image(IMAGE)
    .build();


final ContainerCreation creation = docker.createContainer(containerConfig);
final String id = creation.id();

docker.startContainer(id);

final String[] command = {"sh", "-c", "ls"};
final ExecCreation execCreation = docker.execCreate(
    id, command, DockerClient.ExecCreateParam.attachStdout(),
    DockerClient.ExecCreateParam.attachStderr());
final LogStream output = docker.execStart(execCreation.id());
final String execOutput = output.readFully();