func copyFile(bucket *s3.Bucket, from string, to string, contentType string, maxAge int) {
copyOpts := s3.CopyOptions{
MetadataDirective: "REPLACE",
ContentType: contentType,
Options: s3.Options{
CacheControl: fmt.Sprintf("public, max-age=%d", maxAge),
// ContentEncoding: "gzip",
},
}
_, err := bucket.PutCopy(to, s3.PublicRead, copyOpts, filepath.Join(bucket.Name, from))
if err != nil {
panic(err)
}
}
