那是我的dockerfile
FROM php:7.4-fpm
# Install GD
RUN apt update \
&& apt-get install -y libfreetype6-dev libjpeg62-turbo-dev libpng-dev \
&& docker-php-ext-configure gd \
&& docker-php-ext-install -j$(nproc) pdo_mysql bcmath exif gd
# Arguments defined in docker-compose.yml
ARG user
ARG uid
# Install system dependencies
RUN apt-get update && apt-get install -y \
git \
curl \
libpng-dev \
libonig-dev \
libxml2-dev \
zip \
unzip
# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Install PHP extensions
RUN docker-php-ext-install pdo_mysql mbstring exif pcntl bcmath gd
# Get latest Composer
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
# Create system user to run Composer and Artisan Commands
RUN useradd -G www-data,root -u $uid -d /home/$user $user
RUN mkdir -p /home/$user/.composer && \
chown -R $user:$user /home/$user
# Set working directory
WORKDIR /var/www
USER $user
当我尝试使用 Spatie/Medialibrary 的转换时出现错误：调用未定义函数 Intervention\Image\Gd\imagejpeg()
我尝试了这里和其他网站的所有内容，但仍然没有帮助。LAMP 堆栈的解决方案很多，但我有 Nginx。我是 docker 的新手，不明白出了什么问题。请帮忙 ：）
更新。
dockerfile 的最新版本：
FROM php:7.4-fpm
# Arguments defined in docker-compose.yml
ARG user
ARG uid
RUN apt-get update && apt-get install -y \
zlib1g-dev \
libpng-dev \
libjpeg62-turbo-dev \
libfreetype6-dev
# Install GD
RUN docker-php-ext-configure gd --enable-gd --with-freetype --with-jpeg
RUN cd /usr/src/php/ext/gd && make
RUN cp /usr/src/php/ext/gd/modules/gd.so /usr/local/lib/php/extensions/no-debug-non-zts-20190902/gd.so
RUN docker-php-ext-install -j$(nproc) gd
# Install system dependencies
RUN apt-get update && apt-get install -y \
git \
curl \
libfontconfig1-dev \
xclip \
libjpeg62 \
libonig-dev \
libxml2-dev \
zip \
unzip
# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Install PHP extensions
RUN docker-php-ext-install pdo_mysql mbstring exif pcntl bcmath gd
# Get latest Composer
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
# Create system user to run Composer and Artisan Commands
RUN useradd -G www-data,root -u $uid -d /home/$user $user
RUN mkdir -p /home/$user/.composer && \
chown -R $user:$user /home/$user
# Set working directory
WORKDIR /var/www
USER $user
我尝试了 --with-jpeg 和 --with-freetype，还尝试了创建文件夹的技巧。但 JPEG 支持和 Freetype 支持仍然是错误的。