default Container.ExecResult execInContainer(Charset outputCharset, String... command)
        throws UnsupportedOperationException, IOException, InterruptedException {
        return ExecInContainerPattern.execInContainer(getDockerClient(), getContainerInfo(), outputCharset, command);
    }
Run a command inside a running container, as though using "docker exec".
<p>
@see ExecInContainerPattern#execInContainer(DockerClient, InspectContainerResponse, Charset, String...)
core/src/main/java/org/testcontainers/containers/ContainerState.java