(S)FTP client with GUI on OMV5/Armbian

I'm searching for an FTP (or better SFTP) client for my architecture but I clearly don't know where, how and what to search...

Basically, I want to download stuff from an FTP server (which supports SFTP) to my OdroidHC2. Simple as that.

I have installed OMV5 on top of Armbian, and I'm familiar with XQuartz, so really anything goes: docker, portainer, X11... as long as it has a GUI. I used to run Nautilus with Ubuntu minimal but I'd really prefer an out-and-out FTP client. Unfortunately, docker-filezilla doesn't support arm.

Yes, sorry. I read this https://github.com/jlesage/docker-filezilla/issues/12 the question was left hanging and I wrongly assumed it wasn't supported.

Anyway, installed and running. Not very well actually, but it does the job!