I needed to do this from Jenkins pipeline, so, needed to upload files to specific folder name but not to the root container folder. I use --destination-path that can be folder or folder1/folder2
az storage blob upload-batch --account-name $AZURE_STORAGE_ACCOUNT --destination ${CONTAINER_NAME} --destination-path ${VERSION_FOLDER} --source ${BUILD_FOLDER} --account-key $ACCESS_KEY
hope this help to someone