使用docker搭建时发生的Apache2错误，找不到设置servername的文件

[zhizhemodi]

根据UOJ部署指北执行之后，查看docker logs看到下面的记录，找不到网上可用的解决方案
OS: CentOS8.2
Docker: version 20.10.10

Initing UOJ System bundle...


==> Doing initial config and start service
 * Starting MySQL database server mysqld                                 [ OK ] 
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
table upgrades created.
finished!
 * Stopping NTP server ntpd                                              [ OK ] 
 * Starting NTP server ntpd                                              [ OK ] 
 * Stopping MySQL database server mysqld                                 [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Restarting Apache httpd web server apache2                                   AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.5. Set the 'ServerName' directive globally to suppress this message
                                                                         [ OK ]


***Installation complete. Enjoy!***
 * Starting NTP server ntpd                                              [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Starting Apache httpd web server apache2                                      * 
[root@iZbp11sex44qvjoqbc4z6yZ ~]# docker logs uoj
Initing UOJ System bundle...


==> Doing initial config and start service
 * Starting MySQL database server mysqld                                 [ OK ] 
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
table upgrades created.
finished!
 * Stopping NTP server ntpd                                              [ OK ] 
 * Starting NTP server ntpd                                              [ OK ] 
 * Stopping MySQL database server mysqld                                 [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Restarting Apache httpd web server apache2                                   AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.5. Set the 'ServerName' directive globally to suppress this message
                                                                         [ OK ]


***Installation complete. Enjoy!***
 * Starting NTP server ntpd                                              [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Starting Apache httpd web server apache2                                      * 
[root@iZbp11sex44qvjoqbc4z6yZ ~]# docker logs uoj
Initing UOJ System bundle...


==> Doing initial config and start service
 * Starting MySQL database server mysqld                                 [ OK ] 
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
table upgrades created.
finished!
 * Stopping NTP server ntpd                                              [ OK ] 
 * Starting NTP server ntpd                                              [ OK ] 
 * Stopping MySQL database server mysqld                                 [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Restarting Apache httpd web server apache2                                   AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.17.0.5. Set the 'ServerName' directive globally to suppress this message
                                                                         [ OK ]


***Installation complete. Enjoy!***
 * Starting NTP server ntpd                                              [ OK ] 
 * Starting MySQL database server mysqld                                 [ OK ] 
 * Starting Apache httpd web server apache2                                      *