Return a pod sidecar container.

def get_sidecar_container(job_container_name,
                          sidecar_container_name,
                          sidecar_docker_image,
                          sidecar_docker_image_pull_policy,
                          namespace,
                          sidecar_config,
                          sidecar_args,
                          internal_health_check_url,
                          volume_mounts,
                          env_vars=None):
    """Return a pod sidecar container."""
    env_vars = to_list(env_vars) if env_vars else []
    env_vars += get_sidecar_env_vars(namespace=namespace,
                                     job_container_name=job_container_name,
                                     internal_health_check_url=internal_health_check_url)
    for k, v in sidecar_config.items():
        env_vars.append(get_env_var(name=k, value=v))
    return client.V1Container(name=sidecar_container_name,
                              image=sidecar_docker_image,
                              image_pull_policy=sidecar_docker_image_pull_policy,
                              command=get_sidecar_command(),
                              env=env_vars,
                              volume_mounts=volume_mounts,
                              args=sidecar_args)