Bistro_engine.Shell_commandSourceval make :
Execution_env.t ->
Bistro_internals.Workflow.container_image list ->
Execution_env.insert Bistro_internals.Command.t ->
tval container :
t ->
[ `Docker_container of Bistro_internals.Workflow.Docker_image.t
| `Singularity_container of Bistro_internals.Workflow.container_image ]
option