Thanks a lot, Louis! I tried your method, saved the init script into another volume. But the cluster failed to start WITH error as: Init script failure:Cluster scoped init script /Volumes/datalake/test/utility_rlib_init_script/init-script-RLib.sh failed: Script exit status is non-zero. Why did fail? 

I have another question: is the default CRAN package installation from the Library section of a classic cluster is https://databricks.packagemanager.posit.co/cran/__linux__/noble/2025-03-20/ ? Could we assume we can use https://databricks.packagemanager.posit.co/cran/__linux__/jammy/2025-03-20/?