Does railway bucket support content type constraints when creating an upload url?

Question

I am creating an presigned upload url, to upload an image to railway s3 bucket. Here is the code snippet

func (s *S3ImageStorage) CreateUploadUrl(ctx context.Context, imageKey string, contentType domain.ImageContentType) (string, error) {

req, err := s.presignClient.PresignPutObject(ctx, &s3.PutObjectInput{

Bucket:      aws.String(s.bucket),

Key:         aws.String(imageKey),

ContentType: aws.String(string(contentType)),

}, func(options *s3.PresignOptions) {

options.Expires = s.urlExpiry

})

if err != nil {

return "", domain.NewError("error presigning url for image upload", domain.ErrorCodeInternal, err)

}

return req.URL, nil

}

The problem is that when I send the request, I can omit the content type header, without the bucket blocking the request.