How to Copy an Image from a Web Page to the Clipboard or a File?

Okay, since you can get the source URL for the image you should be able to use the Get a URL action to retrieve it.

image

Strangely the action doesn't have the ability to save to a file, but you can use the clipboard and then dump that to a file if needed.

If for some reason this doesn't work then there's always curl and wget.