ci phpunit

.github/workflows/build.yml

@@ -7,9 +7,41 @@ on:
       - 'dev'
     tags:
       - 'v*'
+  pull_request:
 
 jobs:
+  unit-tests:
+    name: PHP ${{ matrix.php }} - ${{ matrix.stability }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        php: [ 8.1 ]
+        stability: [ prefer-stable ]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: pdo, mbstring, ctype, curl, sqlite3
+          coverage: none
+          tools: composer:v2
+      - name: get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+      - name: restore cached dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ matrix.php }}-${{ matrix.stability }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ matrix.php }}-${{ matrix.stability }}-composer-
+      - run: composer install --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
+      - run: composer run test
+
   publish_docker_images:
+    needs: unit-tests
+    if: github.event_name != 'pull_request'
     runs-on: "ubuntu-latest"
     steps:
       - name: Checkout