Update CI workflow

.github/workflows/ci.yml

@@ -2,25 +2,54 @@ name: CI
 
 on:
   push:
+    branches: [ master ]
   pull_request:
+    branches: [ master ]
   workflow_dispatch:
 
 jobs:
-  ci:
-    name: CI
-    uses: silverstripe/gha-ci/.github/workflows/ci.yml@v1
-    with:
-      dynamic_matrix: true
-    #   extra_jobs: |
-    #     - php: '8.1'
-    #       db: mysql80
-    #       phpunit: true
-    #       installer_version: ^4
-    #     - php: '8.2'
-    #       db: mysql80
-    #       phpunit: true
-    #       installer_version: ^5
-    #     - php: '8.2'
-    #       db: mariadb
-    #       phpunit: true
-    #       installer_version: ^5
+  tests:
+    name: PHP ${{ matrix.php }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: ['8.1', '8.2', '8.3']
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run tests
+        run: vendor/bin/phpunit
+
+      - name: Static Analysis
+        run: vendor/bin/phpstan analyse
+
+  coding-standards:
+    name: Coding Standards
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+          coverage: none
+          tools: composer:v2, php-cs-fixer
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Check coding standards
+        run: php-cs-fixer fix --dry-run --diff