Issue #3194401: Switch to CircleCI as the default automated testing platform

.circleci/config.yml

@@ -37,22 +37,17 @@ jobs:
       - run:
           name: Install PHP extra
           command: |
-            sudo apt update
-            sudo apt install -y libfreetype6-dev libjpeg62-turbo-dev libpng-dev
-            sudo -E docker-php-ext-install zip
+            sudo apt -qq update && sudo apt -qqy upgrade
+            sudo apt-get -yqq install libfreetype6-dev libjpeg62-turbo-dev libpng-dev xvfb zip
             sudo -E docker-php-ext-configure pdo_mysql --with-pdo-mysql=mysqlnd
-            sudo -E docker-php-ext-install bcmath pdo_mysql
-            sudo -E docker-php-ext-install gd
+            sudo -E docker-php-ext-install zip gd mbstring bcmath pdo_mysql mysqli pdo pdo_mysql
+            sudo service apache2 restart
 
       ## Change PHP Configurations.
       - run:
           name: PHP Configurations
           command: |
             echo -e "memory_limit = -1" | sudo tee /usr/local/etc/php/php.ini > /dev/null
-            sudo service apache2 restart
-      - run:
-          name: Disable xdebug PHP extension
-          command: |
             sudo rm /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
             sudo service apache2 restart
       - restore_cache: