Most file-handling tutorials stop at REST endpoints and a local filesystem.
And if course there's a source code repository to get you started: https://github.com/myfear/ejq_substack_articles/tree/main/quarkus-sftp-compose
And if course there's a source code repository to get you started: https://github.com/myfear/ejq_substack_articles/tree/main/quarkus-sftp-compose