ci: add composer install step before running Docker tests

Author: kidunot89

.github/workflows/tests.yml

@@ -27,6 +27,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: mbstring, intl
+          tools: composer
+
+      - name: Install dependencies
+        run: composer install --no-interaction
+
       - name: Setup environment
         run: cp .env.dist .env
 
@@ -45,6 +55,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          extensions: mbstring, intl
+          tools: composer
+
+      - name: Install dependencies
+        run: composer install --no-interaction
+
       - name: Setup environment
         run: cp .env.dist .env