Use the copyBlob to copy the resource with updated metadata

Prior it was trying to copy the payload which was buggy on large files and could produce the following error
    "Failed copy of resources: Incomplete output stream connecting to PUT"

datastorages/jcloud/src/main/java/org/fao/geonet/api/records/attachments/JCloudStore.java

@@ -610,10 +610,10 @@ public void copyResources(ServiceContext context, String sourceUuid, String targ
                         String sourceBlobName = sourceStorageMetadata.getName();
                         String targetBlobName = targetResourceTypeDir + sourceBlobName.substring(sourceResourceTypeDir.length());
 
-                        Blob sourceBlob = jCloudConfiguration.getClient().getBlobStore().getBlob(jCloudConfiguration.getContainerName(), sourceBlobName);
+                        BlobMetadata blobMetadata = jCloudConfiguration.getClient().getBlobStore().blobMetadata(jCloudConfiguration.getContainerName(), sourceBlobName);
 
                         // Copy existing properties.
-                        Map<String, String> targetProperties = new HashMap<>(sourceBlob.getMetadata().getUserMetadata());
+                        Map<String, String> targetProperties = new HashMap<>(blobMetadata.getUserMetadata());
 
                         // Check if target exists.
                         StorageMetadata targetStorageMetadata = null;
@@ -670,14 +670,14 @@ public void copyResources(ServiceContext context, String sourceUuid, String targ
                                     targetProperties.get(versionPropertyName)));
                             }
                         }
-                        Blob targetblob = jCloudConfiguration.getClient().getBlobStore().blobBuilder(targetBlobName)
-                            .payload(sourceBlob.getPayload())
-                            .contentLength(sourceBlob.getMetadata().getContentMetadata().getContentLength())
-                            .userMetadata(targetProperties)
-                            .build();
-
-                        // Upload the Blob in multiple chunks to supports large files.
-                        jCloudConfiguration.getClient().getBlobStore().putBlob(jCloudConfiguration.getContainerName(), targetblob, multipart());
+
+                        // Use the copyBlob to copy the resource with updated metadata.
+                        jCloudConfiguration.getClient().getBlobStore().copyBlob(
+                            jCloudConfiguration.getContainerName(),
+                            sourceBlobName,
+                            jCloudConfiguration.getContainerName(),
+                            targetBlobName,
+                            CopyOptions.builder().userMetadata(targetProperties).build());
                     }
                 }
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