I don't know if this will help, but I just tried the following and it worked. In my documents folder I created a folder called TEST Dock. I put that folder in the dock. It also remains in the documents folder. Then in documents I added several files to that folder and they all appeared in the folder on the dock as alias files. What showed in the dock as an icon was a mini version of the most recent file put in the folder, but if you click on it you can see all of your files. Bottom line, when I put the files in the TEST Dock folder under documents, they all become alias files on the dock.