When you upload a list of pictures to Firebase, how do you get them to be stored as a zip file in Firebase?

Hi! In my app, users can upload a list of photos to create a photo album for a subject. They tap a button, and they can select a list of photos from their photo gallery to upload. I just want those photos to be uploaded to one zip folder in Firebase under that user's name, so that way, I can get a link to that zip file. How can I do this?