Link to download image instead of view image (CANT Change Content-Disposition Header)

I have a Django app and all the static content is handled through NGINX. I want to allow users to download a couple of static resources (photos) in their client by clicking on a 开发者_如何学Pythonlink in the markup.

To make the link/resource downloadable, I know I could change the Content-Disposition. Unfortunately, since all my static assets are being served through NGINX, this seems problematic. I don't want to create a view just to change the Content-Disposition and make the image downloadable.

Is there anything that I can do here via jQuery or otherwise?