use appleboy/drone-git-push for push action

Butane/.woodpecker/butane.yaml

@@ -5,6 +5,8 @@
 #
 # [Butane](https://coreos.github.io/butane/)
 # [Ignition](https://coreos.github.io/ignition/)
+#
+# [drone-git-push](https://github.com/appleboy/drone-git-push)
 
 when:
   branch: main
@@ -17,16 +19,10 @@ steps:
       - bash ./script.sh
 
   - name: push
-    image: docker.io/alpine/git:latest
+    image: docker.io/appleboy/drone-git-push
     environment:
-      MAIL:
-        from_secret: mail
-      CODEBERG_TOKEN:
-        from_secret: codeberg_token
-    commands:
-      - git remote set-url origin https://$CODEBERG_TOKEN@codeberg.org/<YOUR_GIT_REPO>
-      - git config user.email $MAIL
-      - git config user.name "Woodpecker CI"
-      - git add .
-      - git commit -m "CI translate Butane to Ignition files [SKIP CI]"
-      - git push origin main
+      CODEBERG_SSH_KEY:
+        from_secret: codeberg_ssh_key
+    settings:
+      remote: git@codeberg.org:<YOUR_GIT_REPO>.git
+      branch: main