Add GitLab CI

• Different set of boxes, there isn't a 7.2 in the current series and doesn't seem like that'll changes
• Correct PHPUnit version for PHP version, as Travis handles

Fixes #2 (closed)

.gitlab-ci.yml

@@ -11,23 +11,37 @@ before_script:
   - apt-get -yqq update
 
   # install the required packages for the running CI tests
-  - apt-get -yqqf install zip unzip subversion mysql-client default-libmysqlclient-dev --fix-missing
+  - |
+    apt-get -yqqf install lsb-release zip unzip subversion mysql-client libicu-dev libpng-dev libbz2-dev --fix-missing
+
+    if [[ $(lsb_release -a) =~ "stretch" ]]; then
+      apt-get -yqqf install default-libmysqlclient-dev --fix-missing
+    else
+      apt-get -yqqf install libmysqlclient-dev --fix-missing
+    fi
 
   # PHP extensions
-  - docker-php-ext-install mbstring mcrypt mysqli pdo_mysql intl gd zip bz2
-  - docker-php-ext-enable mbstring mcrypt mysqli pdo_mysql intl gd zip bz2
+  - docker-php-ext-install mbstring mysqli intl gd zip bz2
+  - docker-php-ext-enable mbstring mysqli intl gd zip bz2
 
   # Install Composer
   - curl -sS https://getcomposer.org/installer | php
+  - mv composer.phar /usr/local/bin/composer
+  - export PATH="$HOME/.composer/vendor/bin:$PATH"
 
   # Set up WordPress tests
-  - bash bin/install-wp-tests.sh wordpress_tests root mysql mysql latest true
+  - bash bin/install-wp-tests.sh $MYSQL_DATABASE root $MYSQL_ROOT_PASSWORD mysql latest true
 
-  # PHPUnit for most builds
-  - php composer.phar global require "phpunit/phpunit=6.1.*"
+  # PHPUnit
+  - |
+    if [[ $(php -v) =~ "PHP 7." ]]; then
+      composer global require "phpunit/phpunit=6.1.*"
+    else
+      composer global require "phpunit/phpunit=4.8.*"
+    fi
 
   # Install PHPCS and WPCS
-  - php composer.phar global require automattic/vipwpcs
+  - composer global require automattic/vipwpcs
   - phpcs --config-set installed_paths $HOME/.composer/vendor/wp-coding-standards/wpcs,$HOME/.composer/vendor/automattic/vipwpcs
 
 PHPunit:PHP5.3:MySQL:
@@ -35,7 +49,6 @@ PHPunit:PHP5.3:MySQL:
   services:
     - mysql:5.6
   script:
-    - php composer.phar global require "phpunit/phpunit=4.8.*"
     - phpcs
     - phpunit
   allow_failure: true
@@ -45,7 +58,6 @@ PHPunit:PHP5.6:MySQL:
   services:
     - mysql:5.6
   script:
-    - php composer.phar global require "phpunit/phpunit=4.8.*"
     - phpcs
     - phpunit