arv_docker_get_image(arvrunner.api, docker_req, True, arvrunner.project_uuid)
elif isinstance(tool, cwltool.workflow.Workflow):
for s in tool.steps:
arv_docker_get_image(arvrunner.api, docker_req, True, arvrunner.project_uuid)
elif isinstance(tool, cwltool.workflow.Workflow):
for s in tool.steps: