public List<ContainerDescriptor> getContainers(GavLabel gavLabel) {
        Collection<ContainerShutdownDescriptor> shutdownDescriptors = tracker.getShutdownDescriptors(gavLabel);
        List<ContainerDescriptor> containers = new ArrayList<>(shutdownDescriptors.size());
        for (ContainerShutdownDescriptor descriptor : shutdownDescriptors) {
            containers.add(new ContainerDescriptor(descriptor.getContainerId(), descriptor.getImageConfiguration()));
        }
        return containers;
    }
Get all started containers.
The containers are returned in order of their registration.
If no pom label is given, then all containers are returned.

@param gavLabel the label for which to get the containers or <code>null</code> for all containers
@return the containers for the given label or an empty collection
src/main/java/io/fabric8/maven/docker/service/RunService.java