php - 在Docker中安装GD扩展

Question

我是Docker的新手，正在尝试安装PHP 和GD 扩展。

这是我当前的Dockerfile:

FROM php:7.4-fpm-alpine

RUN docker-php-ext-install mysqli pdo pdo_mysql bcmath gd

通过 docker-compose build && docker-compose up -d运行docker时，出现很多错误，最后我得到以下消息:

configure: error: Package requirements (zlib) were not met:

Package 'zlib', required by 'virtual:world', not found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables ZLIB_CFLAGS
and ZLIB_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
ERROR: Service 'php' failed to build: The command '/bin/sh -c docker-php-ext-install mysqli pdo pdo_mysql bcmath gd' returned a non-zero code: 1

末尾没有“gd”的情况下，Docker容器可以正常运行。

可能是什么问题，我该如何解决？

Answer 1

您可以尝试在Dockerfile中添加以下设置:

FROM php:7.4-fpm
RUN apt-get update && apt-get install -y \
        libfreetype6-dev \
        libjpeg62-turbo-dev \
        libpng-dev \
    && docker-php-ext-configure gd --with-freetype --with-jpeg \
    && docker-php-ext-install -j$(nproc) gd

官方 documentation。希望对您有帮助。