refactor(docker): replace install-php-extensions script with direct docker-php-ext-install commands in Dockerfile

Dockerfile

@@ -3,22 +3,24 @@ WORKDIR /var/www/html
 
 ENV COMPOSER_ALLOW_SUPERUSER=1
 
-COPY docker/php/install-php-extensions /usr/local/bin/install-php-extensions
 COPY docker/apt/debian.sources /etc/apt/sources.list.d/debian.sources
 
 RUN apt-get -o Acquire::Check-Valid-Until=false update \
     && apt-get install -y --no-install-recommends \
+        $PHPIZE_DEPS \
         curl \
         default-mysql-client \
+        default-libmysqlclient-dev \
+        libicu-dev \
+        libzip-dev \
         unzip \
-    && install-php-extensions \
+    && docker-php-ext-install -j"$(nproc)" bcmath intl pcntl pdo_mysql zip \
-        bcmath \
-        intl \
-        pcntl \
-        pdo_mysql \
-        zip \
     && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer \
     && apt-get purge -y --auto-remove \
+        $PHPIZE_DEPS \
+        default-libmysqlclient-dev \
+        libicu-dev \
+        libzip-dev \
     && rm -rf /var/lib/apt/lists/*
 
 COPY docker/php/php.ini /usr/local/etc/php/conf.d/99-production.ini