Hello,
Last week we have re-plugged our build pipe for Linux-arm64 and I have quickly but successfully tested it on an arm64 Amazon Linux 2 instance in AWS cloud.
In case you are interested, you can grab the latest build in our download server (1) and I would be happy to help if you have any feedback or question.
(1): https://download.pydio.com/pub/cells/dev/linux-arm64/cells/dev/linux-arm64/cells