@Fernando Casas Osorio
It appears that this Azure template was designed to create a single user and mount that user to a single directory in Azure Files. You would need to modify the template if you wanted to create multiple users or create the container instance outside the template. Looking at the container it creates, you can see it creates the user using the environment variable SFTP_USERS. It looks like you could create this container outside the template and set multiple users, however the atmoz documentation is not clear how to set it with multiple users. I would reach-out to see how this can be accomplished on github.
Once you know how to set multiple users with SFTP_USERS you could manually launch a container instance and setup the necessary Azure Files mounts. If you do figure this out let me know and I am happy to give it a shot from my side.
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