Added missing \

Author: Ekwav

docker/php/Dockerfile

@@ -4,7 +4,7 @@ RUN apt-get update && apt-get install -y \
         libjpeg62-turbo-dev \
         libpng-dev \
     && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
-    && docker-php-ext-install -j$(nproc) gd
+    && docker-php-ext-install -j$(nproc) gd \
     && docker-php-ext-install -j$(nproc) pdo pdo_mysql
 RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer