ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)已解决悬赏5积分

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
 * Restarting periodic command scheduler cron
 * Stopping periodic command scheduler cron
/sbin/start-stop-daemon: warning: failed to kill 31: No such process
   ...done.
 * Starting periodic command scheduler cron
   ...done.
 * Restarting Apache httpd web server apache2
   ...done.
 * Stopping MariaDB database server mysqld
   ...done.
 * Starting MariaDB database server mysqld
   ...done.

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

我们是用docker一键安装的，配置的外部mysql为什么感觉这是链接内部数据库连接不上呢？无法显示登录，