fix: Install PHP / composer

.gitea/workflows/deploy.yaml

@@ -6,6 +6,9 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
 
+    container:
+      image: php:8.2-cli
+
     env:
       COMPOSER_CACHE_DIR: ~/.cache/composer
 
@@ -13,8 +16,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Show current working directory
+      - name: Install Composer (if not already installed)
-        run: pwd
+        run: |
+          curl -sS https://getcomposer.org/installer | php
+          mv composer.phar /usr/local/bin/composer
 
       - name: Display existing composer cache (if runner reused)
         run: ls -la $COMPOSER_CACHE_DIR || echo "No cache found"