Use REST Catalog to access S3 and support setting up regions:
```
CREATE CATALOG iceberg_rest_s3 PROPERTIES (
"type"="iceberg",
"iceberg.catalog.type"="rest",
"uri" = "http://127.0.0.1:8181",
"s3.endpoint" = "http://127.0.0.1:8010",
"s3.access_key" = "admin",
"s3.secret_key" = "password",
"s3.region" = "us-east-1"
);
```