hi @Francesco Camussoni​ I tested this with the rbase image and yes, I don't see the Rstudio enabled for the cluster.

However, I have built an image that works perfectly with Rstudio.

prabakar2610/rbase14:v2

You can use this image with the init script that you have.

You can find the dockerfile in Github

https://github.com/prabakar2610/Databricks/blob/master/dockerfile