Show container request "reused" status
Workbench should indicate when a child workflow step was reused. This can be determined by checking if the container was created before the container request, e.g.
container.created_at < container_request.created_at
I think the best way to show this would be to display as a "Reused" status (in the same list as "Queued" "Running" "Complete" "Failed" etc).
However, since it's possible to share incomplete containers as well, it should only do this for containers that would otherwise show as "Complete". Containers which are in Queued/Running/Failed state should still show their state.