Show image located on a network drive in lovelace

Hi,
I’ve got a camera placing a photo on a drive in my network every day. I want to show that photo in lovelace, but I’m not able to do so.

Using the picture card I tried various paths and methods…

The picture is located on my nas, called diskstation, located in a shared folder named usbshare.
Using an internet browser I can see the picture when using the address:
file://diskstation/usbshare/mypicture.jpg
Using this path in lovelace doesn’t work.
I’m using a password on the NAS, so I also tried storing it on a drive without password, using the same kind of address, but that didnt workout either.
Can anybody tell me what kind of path to use and how to integrate a username and password in there?