Error after restore backup follow the official guide

Hi! I’m using seafile with docker container. Something wrong after I restore the instance to a new computer.
the database password is store at /opt/seafile-data/seafile/conf and will be cover after restore from the backup.
when restart the docker container after restore, a connect error occur.
Failed to connect to MySQL: Access denied for user 'seafile'@'' (using password: YES)