-# Install additional dependacnies and configure apache
-RUN apt-get update -y \
- && apt-get install -y git zip unzip libpng-dev libldap2-dev libzip-dev wait-for-it \
- && docker-php-ext-configure ldap --with-libdir="lib/$(gcc -dumpmachine)" \
- && docker-php-ext-install pdo_mysql gd ldap zip \
- && pecl install xdebug \
- && docker-php-ext-enable xdebug \
- && a2enmod rewrite \
- && sed -ri -e 's!/var/www/html!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf \
- && sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf
+RUN <<EOR
+# Install additional dependencies
+apt-get update
+apt-get install -y \
+ git \
+ zip \
+ unzip \
+ libpng-dev \
+ libldap2-dev \
+ libzip-dev \
+ wait-for-it
+rm -rf /var/lib/apt/lists/*
+
+# Configure apache
+docker-php-ext-configure ldap --with-libdir="lib/$(gcc -dumpmachine)"
+docker-php-ext-install pdo_mysql gd ldap zip
+pecl install xdebug
+docker-php-ext-enable xdebug
+a2enmod rewrite
+sed -ri -e 's!/var/www/html!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf
+sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf