Should be pretty easy to build a backup system. Imgur is just a handy plugin to send images there. Every site that uses a CDN has this problem, potentially. A plugin to upload the images locally or to S3 should be very easy. Very few people want to use locally hosted images, though. But for those that do, the option would be good. Then blocking would be uniform.
Backup and Restore Process
Has anyone tried to backup site 1 and restore to site 2? Besides copying over the rdb file, does nodebb store anything else in folders that should be copied over to site 2?
public/uploadsfolder as well for uploaded files.
@baris thank you! I will give this a try.