Upon putting an object into the S3 bucket (for instance, while copyin…

…g), we need to also provide the content-type of the file. This could come crucial in cases like when the uploaded file (let's say an XML file) is going to be used by a specific application later. (#204)

Co-authored-by: Ali Abdi <ali.abdi@kaiserkraft-europa.de>

src/main/java/software/amazon/nio/spi/s3/S3WritableByteChannel.java

@@ -108,6 +108,7 @@ public void close() throws IOException {
                             .putObjectRequest(PutObjectRequest.builder()
                                     .bucket(path.bucketName())
                                     .key(path.getKey())
+                                    .contentType(Files.probeContentType(tempFile))
                                     .build())
                             .source(tempFile)
                             .build()