Use the mysql base version, make multiple wordpress versions

Author: Rahe

.github/workflows/ci.yml

@@ -13,13 +13,14 @@ jobs:
           MYSQL_ROOT_PASSWORD: root
           MYSQL_DATABASE: wordpress_test
         ports:
-          - 3306/tcp
+          - 3306/3306
         options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3
     strategy:
       matrix:
         operating-system: [ ubuntu-latest ]
-        php-versions: [ '7.1', '7.2', '7.3' ]
-    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
+        php-versions: [ '7.2', '7.3', '7.4' ]
+        wp: [ '5.4', '5.5', '5.6', 'latest' ]
+    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }} with WP ${{ matrix.wp }}
     steps:
     - name: Checkout
       uses: actions/checkout@v1
@@ -31,14 +32,11 @@ jobs:
         coverage: xdebug #optional, setup coverage driver
         tools: psalm, phpcbf, phpcs, phpunit:5.7.27
 
-    - name: Start mysql service
-      run: sudo /etc/init.d/mysql start && mysql -V
-
     - name: Check PHP Version
       run: php -v
 
     - name: Install WP Tests
-      run: bash bin/install-wp-tests.sh wordpress_test root root localhost latest
+      run: bash bin/install-wp-tests.sh wordpress_test root root localhost ${{ matrix.wp }}
 
     - name: phpunit tests
       run: phpunit