安装依赖

apt install -y libwebp-dev libjpeg-dev libpng-dev libfreetype6-dev

编译gd库，指定路径

docker-php-ext-configure gd --with-webp=/usr/include/webp --with-jpeg=/usr/include --with-freetype=/usr/include/freetype2

安装GD

docker-php-ext-install gd