Override the default environment policy of your CloudShare project.
VMs "expire" according to your default policy. If you wish to override this behavior, you can specify a different number of days for expiration.
For example, you can specify 1 day expiration for your job, which means the VM will be deleted after 24 hours. If you build the job again, after the VM has expired, a new VM will be created with the same name.
This helps you avoid accumulating unused VMs, and also means you don't need to prune/GC the images/containers on your VM as often.