Thank you, @rachel.house , for the hints.
Based on these I figured out to use this setting to be able to write to DBFS:
context_root_dir = f"/dbfs{project.MNT_PATH}/GX/"
project_config = DataContextConfig(
## Local storage backend
store_backend_defaults=FilesystemStoreBackendDefaults(
root_directory=context_root_dir
),
## Data docs site storage
data_docs_sites={
"az_site": {
"class_name": "SiteBuilder",
"store_backend": {
"class_name": "TupleAzureBlobStoreBackend",
"container": "\$web",
"connection_string": "DefaultEndpointsProtocol=https;AccountName=<AccountName>;AccountKey=<AccountKey>;EndpointSuffix=core.windows.net",
},
"site_index_builder": {
"class_name": "DefaultSiteIndexBuilder",
"show_cta_footer": True,
},
}
},
)
context = gx.get_context(project_config=project_config)```
But good to know also your way!
Greetings and Kudos!