Add the option to get images from the outside URL (website, social ...) instead of the default option to upload pictures and get from the image library
Example (in markdown):
default: 
new option:  external-url like from pinterest, google, fb....
Screenshot or video of the issue (if applicable):
Beside that, we need add captions and allow user choose hide/show this caption of image.
Hi @drl.oucommunity,
Thank you for taking the time to make those feature requests! I've passed them on to the Page Builder team 
I can't promise they'll get around to them immediately or at all, but they'll have a look and consider whether or not that fits with the vision of the product.
Either way, these are things you can set up on your end for the time being, but I agree it'd be nice to have it built-in Prismic.
Yes, I can create new Slice custom this option, but it'd be nice to have it built-in.
