Uploading DBFS file, not appearing in filesystem.

[CharlesAbetz]

Using the databricksDeployDBFSFilesTask in Azure DevOps which is essentially a wrapper for the Powershell script in this project.

In my diagnostic log of the pipeline run I get the below
##[debug]Pushing file C:\a_work\161\a\clusterBuild\Databricks\rstudio-install.sh to /databricks/rstudio/rstudio-install.sh
##[debug]POST https://australiasoutheast.azuredatabricks.net/api/2.0/dbfs/put with -1-byte payload
##[debug]received 3-byte response of content type application/json

So I believe everything is ok, however.

When I actually check the file system in Databricks, it isn't there?
ls -al /databricks/rstudio

drwxr-xr-x 2 root root 4096 Sep 10 06:49 ./
drwxr-xr-x 1 root root 4096 Sep 10 06:49 ../

This is stopping me automating a cluster provision.

What am I missing?