Migrating from Docker: carry over seafevents.conf options too
The server is installed disabled: enable it once configured
Manage the server through seafile.target, seafdav and seafile-fuse stay outside it; drop the headless hint
Start seafevents with the stack; the dump needs the root password from docker's .env
Docker import needs no migration reconciliation; seaf-dbctl covers seahub
Add Migrating from Docker (verified against the 13.0.25 image); the version stamp is docker's own file