+## Pleroma.Uploaders.S3
+* `bucket`: S3 bucket name
+* `public_endpoint`: S3 endpoint that the user finally accesses(ex. "https://s3.dualstack.ap-northeast-1.amazonaws.com")
+* `truncated_namespace`: If you use S3 compatible service such as Digital Ocean Spaces or CDN, set folder name or "" etc.
+For example, when using CDN to S3 virtual host format, set "".
+At this time, write CNAME to CDN in public_endpoint.
+