Right now Digital Ocean Spaces support custom URL but this only works with http not http(s).
Custom URL files of Digital Ocean Spaces cannot be access via SSL.
So please add SSL/Let's Encrypt Integration for Custom Domain of Digital Ocean Spaces.
Most of the sites are now using SSL so serving files with custom domain/own domain with SSL is obvious.
Please consider these 3 points to make Digital Ocean Spaces CDN a perfect for modern web application.
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FYI: Seems same/similar suggestion is already underway...
https://digitalocean.uservoice.com/forums/136585-digitalocean/status/504950
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