These runners share a [distributed cache](https://docs.gitlab.com/runner/configuration/autoscale.html#distributed-runners-caching) through use of a Google Cloud Storage (GCS) bucket. Cache contents not updated within the last 14 days are automatically removed through use of an [object lifecycle management policy](https://cloud.google.com/storage/docs/lifecycle).
## Pre-clone script
Build Cloud runners for Linux provide a way to run commands in a CI