GD 库缺少 Freetype Support

[monsterxcn]

Hi 我最近尝试使用 metowolf/docker-lemp 来部署网站服务，在 PHP 容器中使用 composer 安装了项目依赖，但是出现报错 Fatal error

Uncaught Error: Call to undefined function imagettfbbox() in /var/www/xxx/vendor/gregwar/captcha/src/Gregwar/Captcha/CaptchaBuilder.php:323

之前我用 oneinstack/oneinstack 环境部署的相同项目没有问题。搜索后我发现可能是由于 Docker 中使用的 PHP GD 库缺少 Freetype 支持，请问这是意料之中的情况吗？

Dockerfile 中我看到似乎安装了 freetype 等支持，但是 print_r(gd_info()) 却告知没有 Freetype Support，不清楚问题出在什么地方。我尝试了 metowolf/php 镜像的 latest 7.4.7 7.4.6 三个版本也都出现此错误。

以下是我觉得可能有帮助的信息：

# php -r 'print_r(gd_info());'

Array
(
    [GD Version] => bundled (2.1.0 compatible)
    [FreeType Support] => 
    [GIF Read Support] => 1
    [GIF Create Support] => 1
    [JPEG Support] => 
    [PNG Support] => 1
    [WBMP Support] => 1
    [XPM Support] => 
    [XBM Support] => 1
    [WebP Support] => 
    [BMP Support] => 1
    [TGA Read Support] => 1
    [JIS-mapped Japanese Font Support] => 1
)

# php -i

Configure Command =>  './configure'  '--build=x86_64-linux-musl' '--with-config-file-path=/usr/local/etc/php'
  '--with-config-file-scan-dir=/usr/local/etc/php/conf.d' '--enable-option-checking=fatal' '--with-mhash' '--enable-ftp'
  '--enable-mbstring' '--enable-mysqlnd' '--with-password-argon2' '--with-sodium=shared' '--with-curl' '--with-libedit'
  '--with-openssl' '--with-zlib' '--with-pear' '--enable-fpm' '--with-fpm-user=www-data' '--with-fpm-group=www-data'
  '--disable-cgi' 'build_alias=x86_64-linux-musl'

...

gd

GD Support => enabled
GD Version => bundled (2.1.0 compatible)
GIF Read Support => enabled
GIF Create Support => enabled
PNG Support => enabled
libPNG Version => 1.6.37
WBMP Support => enabled
XBM Support => enabled
JIS-mapped Japanese Font Support => enabled
BMP Support => enabled
TGA Read Support => enabled

Directive => Local Value => Master Value
gd.jpeg_ignore_warning => 1 => 1

...

下面是此前使用的 Oneinstack 环境 PHP 配置（安装了好多不必要的...

# php -i

Configure Command =>  './configure'  '--prefix=/usr/local/php' '--with-config-file-path=/usr/local/php/etc'
  '--with-config-file-scan-dir=/usr/local/php/etc/php.d' '--with-fpm-user=www' '--with-fpm-group=www' '--enable-fpm'
  '--enable-opcache' '--disable-fileinfo' '--enable-mysqlnd' '--with-mysqli=mysqlnd' '--with-pdo-mysql=mysqlnd'
  '--with-iconv-dir=/usr/local' '--with-freetype' '--with-jpeg' '--with-zlib' '--enable-xml' '--disable-rpath' '--enable-bcmath'
  '--enable-shmop' '--enable-exif' '--enable-sysvsem' '--enable-inline-optimization' '--with-curl=/usr/local/curl'
  '--enable-mbregex' '--enable-mbstring' '--with-password-argon2' '--with-sodium=/usr/local' '--enable-gd'
  '--with-openssl=/usr/local/openssl' '--with-mhash' '--enable-pcntl' '--enable-sockets' '--with-xmlrpc' '--enable-ftp'
  '--enable-intl' '--with-xsl' '--with-gettext' '--with-zip=/usr/local' '--enable-soap' '--disable-debug'
  'PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/:'

...

gd

GD Support => enabled
GD Version => bundled (2.1.0 compatible)
FreeType Support => enabled
FreeType Linkage => with freetype
FreeType Version => 2.8.0
GIF Read Support => enabled
GIF Create Support => enabled
JPEG Support => enabled
libJPEG Version => 6b
PNG Support => enabled
libPNG Version => 1.5.13
WBMP Support => enabled
XBM Support => enabled
BMP Support => enabled
TGA Read Support => enabled

Directive => Local Value => Master Value
gd.jpeg_ignore_warning => 1 => 1

...

我还看到 docker-library/php#926 和 docker-library/php#1047 有人提到 docker-php-ext-install 的特性、扩展安装顺序等，但是我不太理解该做何修改。

我将继续学习，如果有时间回复的话十分感谢！