Установите глобальную директиву «ServerName», чтобы подавить это сообщение

Question

У меня есть этот docker-compose.yml:

version: "3"
services:
   gallant_keller:
     image: laamaral/docker-api-spring
     container_name: gallant_keller
     environment:
     - discovery.type=single-node
     ports:
     - 9200:9200
     volumes:
     - /home/leonel/Desktop/CloneApiall/WebApi-spring-php/API/spring-server-generated/target
   youthful_chandrasekhar:
     image: laamaral/docker-api-php

     container_name: youthful_chandrasekhar
     depends_on:
      - gallant_keller
     ports:
      - 8089:80
     volumes:
      - /home/leonel/Desktop/CloneApiall/WebApi-spring-php/frontendAPI/php-client/SwaggerClient-php
volumes:
    esdata1:
      driver: local

при запуске с командой

$ docker-compose up

Дает мне следующее предупреждение:

youthful_chandrasekhar    | AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.19.0.3. Set the 'ServerName' directive globally to suppress this message
youthful_chandrasekhar    | AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.19.0.3. Set the 'ServerName' directive globally to suppress this message
youthful_chandrasekhar    | [Fri Oct 25 10:59:58.366403 2019] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.38 (Debian) PHP/7.2.23 configured -- resuming normal operations
youthful_chandrasekhar    | [Fri Oct 25 10:59:58.367071 2019] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND'

Как мне это исправить?

PS: я новичок в докере