步驟1:先用 Portainer compose 建立1個 stacks 如下重點說明:
只建 mysql 及 phpMyadmin(重點:network二者需成一樣這樣才可連線)!
步驟2:安裝 WordPress 如下

重點說明:
1.要先建 stacks ,compose 如下

#成功安裝 mysql phpmyadmin
version: '2'

services:

  # mysql容器
  xjy-mysql:
    image: mysql:5.7.26
    container_name: joulong-mysql
    environment:
      - MYSQL_USER=root
      - MYSQL_ROOT_PASSWORD=root
      - MYSQL_ALLOW_EMPTY_PASSWORD=no
      - MYSQL_DATABASE=wordpress
    ports:
      - 3306:3306
    command: mysqld --lower_case_table_names=1 --skip-ssl --character_set_server=utf8 --explicit_defaults_for_timestamp
    networks:
      - xjynet
      
  # phpmyadmin容器
  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    container_name: phpmyadmin
    ports:
      - "9090:80"
    environment:
      - MYSQL_USER=root
      - MYSQL_PASSWORD=root
      - MYSQL_ROOT_PASSWORD=root
      - PMA_HOST=xjy-mysql
    networks:
      - xjynet
      
  # portainer容器
  portainer:
    image: portainer/portainer:latest
    container_name: joulong-portainer
    restart: always
    ports:
      - 9095:9000
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    networks:
      - xjynet

# 創建網路
networks:
  xjynet:
    driver: bridge

2.mysql與phpmyadmin如果分次安裝 network要一致如下:

3.一般 wordpress 上傳只 2M,務必修改上傳上限如下:
利用 nano 去修改 :/usr/local/etc/php/conf.d/uploads.ini 修改上傳上限(重要)
通常 nano 需安裝如何安裝如右步驟:1.apt update 2.apt upgrade 3.apt install nano

file_uploads = On
memory_limit = 500M
upload_max_filesize = 500M
post_max_size = 500M
max_execution_time = 600

4.修改網址是必要的建議在 mysql修改比較好如下(因有時改https後便無法連WordPress界面 ):
修改網址方法(重要)
方法1:
點選 xxx_options，會看到右手邊有兩個欄位如下：siteurl 和 home，我們需要把這兩個欄位，改回你原本的網址。

方法2:

SELECT * from wp_options where option_name = 'siteurl' and option_value = 'http://xxx.hopto.org:8333';
SELECT * from wp_options where option_name = 'home' and option_value = 'http://xxx.hopto.org:8333';
逐一修改
update wp_options set option_value = 'http://xxx.hopto.org:8116', where option_name = 'siteurl' and option_value = 'http://xxx.hopto.org:8116'
update wp_options set option_value = 'http://xxx.hopto.org:8116', where option_name = 'home' and option_value = 'http://xxx.hopto.org:8116'
**二個一起改**
update wp_options set option_value = 'http://xxx.hopto.org:8116' where option_value = 'http://localhost:8116'