Dokuwiki docker image 加入 mysql client 相關套件

這是本文件的舊版！

因為安裝 Statistics Plugin 會將統計資料寫入 MySQL 資料庫, 但 dokuwiki 在 LinuxServer.io 的 image 內並無 mysql client 相關套件, 導致出現 Error: Call to undefined function mysqli_connect()
如果不想自己重新打包 docker image 可以使用 LinuxServer.io 提供的容器初始化腳本方式來處理

建立 custom-init 目錄
```
mkdir -p custom-init
```
新增容器初始化腳本
custom-init/10-install-mysqli.sh
```
#!/bin/bash
 
# 安裝 mysql client 相關套件
apk add --no-cache mysql-client php-mysqli
 
# 重啟 PHP-FPM 讓套件生效
s6-svc -r /run/service/svc-php-fpm
 
```
https://raw.githubusercontent.com/tryweb/docker-compose/refs/heads/main/dokuwiki/custom-init/10-install-mysqli.sh

修改 docker-compose.yml 掛上 custom-init

docker-compose.yml

services:
  dokuwiki:
    image: lscr.io/linuxserver/dokuwiki:latest
    container_name: dokuwiki
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Asia/Taipei
    ports:
      - 80:80
      - 443:443
    restart: always
    volumes:
      - ./dokuwiki_data:/config
      - ./custom-init:/custom-cont-init.d
 
  mariadb:
    image: mariadb
    container_name: db
    ports:
      - 3306:3306
    environment:
      - MARIADB_ROOT_PASSWORD=${MARIADB_ROOT_PASSWORD}
      - TZ=Asia/Taipei
    restart: always
    volumes:
      - ./db_data:/var/lib/mysql
 
  adminer:
    image: adminer
    container_name: adminer
    restart: always
    ports:
      - 8080:8080
 
  watchtower:
    container_name: watchtower
    image: containrrr/watchtower
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - TZ=Asia/Taipei
      - WATCHTOWER_SCHEDULE=0 30 23 * * *
      - WATCHTOWER_CLEANUP=true
    labels:
      - "com.centurylinklabs.watchtower.enable=true"
    restart: unless-stopped

https://raw.githubusercontent.com/tryweb/docker-compose/refs/heads/main/dokuwiki/docker-compose.yml

重新啟動 docker compose

docker compose down
docker compose up -d

在 dokuwiki 的 log 應該會看到類似以下的訊息

:
dokuwiki    | │ 2023-04-13 │ 2024-05-27 │ /config/nginx/nginx.conf                                               │
dokuwiki    | │ 2023-12-25 │ 2024-07-16 │ /config/nginx/site-confs/default.conf                                  │
dokuwiki    | └────────────┴────────────┴────────────────────────────────────────────────────────────────────────┘
dokuwiki    | [custom-init] Files found, executing
dokuwiki    | [custom-init] 10-install-mysqli.sh: executing...
dokuwiki    | fetch http://dl-cdn.alpinelinux.org/alpine/v3.20/main/x86_64/APKINDEX.tar.gz
dokuwiki    | fetch http://dl-cdn.alpinelinux.org/alpine/v3.20/community/x86_64/APKINDEX.tar.gz
dokuwiki    | (1/9) Installing mariadb-common (10.11.11-r0)
dokuwiki    | (2/9) Installing perl (5.38.3-r0)
dokuwiki    | (3/9) Installing perl-error (0.17029-r2)
dokuwiki    | (4/9) Installing perl-git (2.45.3-r0)
dokuwiki    | (5/9) Installing git-perl (2.45.3-r0)
dokuwiki    | (6/9) Installing libstdc++ (13.2.1_git20240309-r1)
dokuwiki    | (7/9) Installing mariadb-client (10.11.11-r0)
dokuwiki    | (8/9) Installing mysql-client (10.11.11-r0)
dokuwiki    | (9/9) Installing php83-mysqli (8.3.15-r0)
dokuwiki    | Executing busybox-1.36.1-r29.trigger
dokuwiki    | OK: 176 MiB in 140 packages
dokuwiki    | [custom-init] 10-install-mysqli.sh: exited 0
dokuwiki    | [ls.io-init] done.
: