volumes property

Volumes to mount (bind mount) from the host machine files or directories into the container, formatted to match docker run's --volume option, e.g. /foo:/bar, or /foo:/bar:ro If the TaskSpec.Volumes field is specified but this field is not, Batch will mount each volume from the host machine to the container with the same mount path by default.

In this case, the default mount option for containers will be read-only (ro) for existing persistent disks and read-write (rw) for other volume types, regardless of the original mount options specified in TaskSpec.Volumes. If you need different mount settings, you can explicitly configure them in this field.