``` abstract class DockerExistingContainer extends...

# gradle

[jlleitschuh]

abstract class DockerExistingContainer extends AbstractDockerRemoteApiTask {
    /**
     * Container ID used to perform operation. The container for the provided ID has to be created first.
     */
    @Internal
    String containerId

    void targetContainerId(Closure containerId) {
        conventionMapping.containerId = containerId
    }

    void targetContainerId(Callable<String> containerId) {
        targetContainerId { containerId.call() }
    }

    @Input
    String getContainerId() {
        containerId
    }
}