[S3] 버킷 정책 및 CORS 설정 (수정)

퍼블릭 버킷 설정 { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": "*", "Action": [ "s3:PutObject", "s3:PutObjectAcl", "s3:GetObject", "s3:GetObjectAcl", "s3:DeleteObject" ], "Resource": "arn:aws:s3:::버킷이름/*" }, { "Effect": "Allow", "Principal": "*", "Action": [ "s3:ListBucketMultipartUploads", "s3:AbortMultipartUpload", "s3:ListMultipartUploadParts" ], "Resource": [ "arn:aws:s3:::버킷이름", "arn:aws:s3:::버킷이름/*" ] }, { "Effect": "Allow", "Principal": "*", "Action": "s3:ListBucket...