Due to it only being two users, I would highly recommend swapping over to the pro version!
Reference error, are you sure you downloaded the correct Seafile docker? I only mention this because it was to my knowledge that Seafile had an ARM based setup as well separate to the AMD64 version.
Seafile pro edition 10.0.9 is ready! ARM64 is also supported now (This is a good few versions old now but relevant).
Are you downloading the docker-compose.yml file through the docker command, or are you downloading the file? (I would see if you could specify ARM64 if you are pulling it through docker).
Let me know if you need help with the commands to do a straight docker download and setup!
Kind regards,
Mitch