Docker Alpine - Enable GD JPEG support - docker

Question

I'm having a problem getting GD Jpeg support through the Alpine image for PHP-FPM. I've tried every combination I can think of to get this working. Below is a snippet from my Dockerfile:
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
When I shell into the container and run php -r 'print_r(gd_info());', I get the following:
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 Support] has an empty value. I've tried replacing /usr/lib/ with:
/usr/
/usr/include/
with no success. The problem is that when I try to install Magento 2 through Composer I get the error:
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'.
Has anyone experienced this, and if so, how did you solve it?
Thank you

Answer 1

could you try removing the last slash in your first RUN command and check ?
FROM php:7.1-fpm-alpine
RUN apk update \
&& apk upgrade \
&& apk add --no-cache \
freetype-dev \
libpng-dev \
jpeg-dev \
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
This is my working Image using Linux Alpine :
FROM php:7-fpm-alpine
# Install all dependencies.
RUN apk --no-cache update \
&& apk --no-cache upgrade \
&& apk add --no-cache $PHPIZE_DEPS \
freetype-dev \
libjpeg-turbo-dev \
libpng-dev && \
docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ --with-png-dir=/usr/include/ && \
docker-php-ext-install -j$(getconf _NPROCESSORS_ONLN) gd && \
...