fix: Pin MySQL 8.0, enable native auth, and optimize test matrix

  - Pin MySQL to 8.0 to avoid 8.4 breaking changes
  - Enable mysql_native_password for client compatibility
  - Reduce test matrix from 7 WP versions to 2 WP × 2 PHP (5 jobs total)
  - Make PHP version configurable in Docker setup

Author: josephfusco

.github/workflows/unit-test-plugin-nightly.yml

@@ -9,6 +9,7 @@ on:
 
 jobs:
   unit_test_plugin:
+    name: WP Nightly / PHP 8.3
     runs-on: ubuntu-22.04
 
     steps:
@@ -19,7 +20,8 @@ jobs:
         working-directory: ./plugins/faustwp
         run: |
           docker compose build \
-            --build-arg WP_VERSION=6.5
+            --build-arg WP_VERSION=6.8 \
+            --build-arg PHP_VERSION=8.3
           docker compose up -d
 
       - name: Wait for db

.github/workflows/unit-test-plugin.yml

@@ -9,22 +9,25 @@ on:
 
 jobs:
   unit_test_plugin:
-    name: WordPress ${{ matrix.wordpress }}
+    name: WP ${{ matrix.wordpress }} / PHP ${{ matrix.php }}
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        wordpress: [ '6.8', '6.7', '6.6', '6.5', '6.4', '6.3', '6.2']
+        wordpress: ['6.8', '6.7']
+        php: ['8.1', '8.3']
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
       - name: Create Docker Containers
         env:
           WP_VERSION: ${{ matrix.wordpress }}
+          PHP_VERSION: ${{ matrix.php }}
         working-directory: ./plugins/faustwp
         run: |
           docker compose build \
-            --build-arg WP_VERSION=${{ matrix.wordpress }}
+            --build-arg WP_VERSION=${{ matrix.wordpress }} \
+            --build-arg PHP_VERSION=${{ matrix.php }}
           docker compose up -d
 
       - name: Wait for db

plugins/faustwp/.docker/Dockerfile

@@ -1,6 +1,7 @@
 ARG WP_VERSION
+ARG PHP_VERSION=8.2
 
-FROM wordpress:${WP_VERSION}-php8.2
+FROM wordpress:${WP_VERSION}-php${PHP_VERSION}
 
 # Save the build args for use by the runtime environment
 ENV WP_VERSION=${WP_VERSION}

plugins/faustwp/docker-compose.yml

@@ -2,7 +2,10 @@ services:
   wordpress:
     build:
       context: ./.docker
-    image: faustwp:latest-wp-${WP_VERSION-latest}
+      args:
+        WP_VERSION: ${WP_VERSION:-6.8}
+        PHP_VERSION: ${PHP_VERSION:-8.2}
+    image: faustwp:wp-${WP_VERSION:-6.8}-php${PHP_VERSION:-8.2}
     restart: always
     ports:
       - 8080:80