reduce amount and size of Docker image layers

php/Dockerfile

@@ -1,34 +1,27 @@
 ARG PHP_BASE_IMAGE_TAG=8.0-fpm
 
 FROM php:${PHP_BASE_IMAGE_TAG} AS sylius_php
-RUN apt update
-RUN apt install -y zlib1g-dev
-RUN apt install -y libpng-dev
-RUN apt install -y libjpeg-dev
-RUN apt install -y libfreetype6-dev
-RUN apt install -y libicu-dev
-RUN apt install -y zip
-RUN apt install -y libmemcached-dev
-RUN docker-php-ext-install gd
-RUN docker-php-ext-install exif
-RUN docker-php-ext-install fileinfo
-RUN docker-php-ext-install intl
-RUN docker-php-ext-install pdo_mysql
-RUN docker-php-ext-install opcache
-RUN pecl install apcu
+
+COPY --from=mlocati/php-extension-installer /usr/bin/install-php-extensions /usr/local/bin/
+
+RUN apt-get update && \
+    apt-get install -y unzip && \
+    install-php-extensions  \
+      apcu \
+      exif \
+      fileinfo \
+      gd \
+      imagick \
+      intl \
+      memcached \
+      opcache \
+      pdo_mysql \
+      zip
 RUN docker-php-ext-enable apcu --ini-name 10-docker-php-ext-apcu.ini
-RUN pecl install memcached
 RUN docker-php-ext-enable memcached
-RUN docker-php-ext-configure gd --with-freetype --with-jpeg
-RUN apt install -y libmagickwand-dev --no-install-recommends
-RUN pecl install imagick
-RUN docker-php-ext-enable imagick
 ENV PHP_DATE_TIMEZONE="Europe/Warsaw"
 COPY --from=composer /usr/bin/composer /usr/bin/composer
-WORKDIR /symfony
-RUN apt install -y wget
-RUN wget https://get.symfony.com/cli/installer
-RUN chmod +x installer
-RUN bash installer
-RUN mv /root/.symfony/bin/symfony /usr/local/bin/symfony
+
+RUN curl -fs https://get.symfony.com/cli/installer | bash && \
+    mv /root/.symfony/bin/symfony /usr/local/bin/symfony
 WORKDIR /