Source Code:
https://github.com/corsego/20-active_storage/
Active Storage Direct Uploads Docs:
https://edgeguides.rubyonrails.org/active_storage_overview.html#direct-uploads

0:00 The Mission
0:15 Add Direct Uploads
2:00 CORS problem in Direct Uploads + Cloud Storage
3:30 add CORS to S3
4:47 works now!
5:43 summary