Better matrix builds

.woodpecker.yml

@@ -1,19 +1,13 @@
 when:
   - event: [push, pull_request, pull_request_closed, tag, release, manual]
 
-matrix:
-  PHP_VERSION:
-    - 8.0
-    - 8.1
-    - 8.2
-    - 8.3
 steps:
   - name: requirements
     image: composer
     commands:
     - composer install --no-dev
   - name: run
-    image: php:${PHP_VERSION}-cli
+    image: php:cli-alpine
     commands:
       - ./backup show config.example.yml
   - name: dependencies