fix: drone composer-install use php:7.3-cli

.drone.yml

@@ -11,14 +11,18 @@ trigger:
 
 steps:
   # -------------------------------------------------------
-  # 1. Bağımlılıkları kur
+  # 1. Bağımlılıkları kur (PHP 7.3 zorunlu)
   # -------------------------------------------------------
   - name: composer-install
-    image: composer:2.2
+    image: php:7.3-cli
     volumes:
       - name: composer-cache
         path: /root/.composer/cache
     commands:
+      - apt-get update -qq
+      - apt-get install -y --no-install-recommends unzip curl libzip-dev libpng-dev libxml2-dev libonig-dev > /dev/null 2>&1
+      - docker-php-ext-install pdo pdo_mysql zip mbstring > /dev/null 2>&1
+      - curl -sS https://getcomposer.org/installer | php -- --2.2 --install-dir=/usr/local/bin --filename=composer
       - composer install --no-dev --optimize-autoloader --no-interaction --prefer-dist
 
   # -------------------------------------------------------