Add Dockerfile.

Dockerfile

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+FROM php:7-apache
+
+RUN apt-get update &&  apt-get install -y curl libcurl4-openssl-dev libicu-dev libpng-dev gnupg zip libzip-dev
+
+RUN docker-php-ext-install pdo_mysql curl intl mbstring bcmath gd zip
+
+# Install composer
+#RUN curl --silent --show-error https://getcomposer.org/installer | php
+
+# Install yarn
+RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
+RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
+RUN apt-get update && apt-get install -y yarn
+
+COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
+RUN composer global require hirak/prestissimo
+
+WORKDIR /var/www/html
+COPY . .
+
+# Setup apache2
+RUN a2dissite 000-default.conf
+COPY ./.docker/symfony.conf /etc/apache2/sites-available/symfony.conf
+RUN a2ensite symfony.conf
+
+ENV APP_ENV=demo
+
+RUN composer install -a --no-dev
+RUN yarn install && yarn build
+RUN php bin/console ckeditor:install --clear=skip
+
+RUN php bin/console cache:warmup
+
+# Clean up composer cache
+RUN rm -rf /root/.composer
+