Docker Alpine-启用GD JPEG支持

Question

我在通过Alpine映像获得PHP-FPM的GD Jpeg支持时遇到问题。我尝试了我能想到的每种组合以使其正常工作。以下是我的Dockerfile中的片段：

FROM php:7.1-fpm-alpine

RUN apk update \
    && apk upgrade \
    && apk add --no-cache \
        freetype \
        libpng \
        libjpeg-turbo \
        freetype-dev \
        libpng-dev \
        jpeg-dev \
        libjpeg \
        libjpeg-turbo-dev \

RUN docker-php-ext-configure gd \
        --with-freetype-dir=/usr/lib/ \
        --with-png-dir=/usr/lib/ \
        --with-jpeg-dir=/usr/lib/ \
        --with-gd

RUN NUMPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) \
    && docker-php-ext-install -j${NUMPROC} gd

当我将其装入容器并运行时php -r 'print_r(gd_info());'，得到以下信息：

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] => 
    [JIS-mapped Japanese Font Support] => 
)

[JPEG支持]为空。我试过替换/usr/lib/为：

• /usr/
• /usr/include/

没有成功。问题是当我尝试通过Composer安装Magento 2时出现错误：

Warning: call_user_func() expects parameter 1 to be a valid callback, function 'imagecreatefromjpeg' not found or invalid function name in /var/www/html/vendor/magento/framework/Image/Adapter/Gd2.php on line 65'.

有没有人遇到过这种情况，如果是这样，您是如何解决的？

谢谢

Answer 1

您可以尝试删除第一个RUN命令中的最后一个斜杠并检查吗？

FROM php:7.1-fpm-alpine

RUN apk update \
    && apk upgrade \
    && apk add --no-cache \
        freetype \
        libpng \
        libjpeg-turbo \
        freetype-dev \
        libpng-dev \
        jpeg-dev \
        libjpeg \
        libjpeg-turbo-dev

RUN docker-php-ext-configure gd \
        --with-freetype-dir=/usr/lib/ \
        --with-png-dir=/usr/lib/ \
        --with-jpeg-dir=/usr/lib/ \
        --with-gd

RUN NUMPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) \
    && docker-php-ext-install -j${NUMPROC} gd

这是我使用Linux Alpine的工作映像：

FROM php:7-fpm-alpine

# Install all dependencies.
RUN apk --no-cache update \
    && apk --no-cache upgrade \
    && apk add --no-cache $PHPIZE_DEPS \
        freetype \
        freetype-dev \
        libjpeg-turbo \
        libjpeg-turbo-dev \
        libpng \
        libpng-dev && \
    docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ --with-png-dir=/usr/include/ && \
    docker-php-ext-install -j$(getconf _NPROCESSORS_ONLN) gd && \
...