.woodpecker/.deploy.yaml: add a random message to PR

.woodpecker/.deploy.yaml

@@ -48,10 +48,18 @@ steps:
     - branch:
         exclude: master
       event: push
+- name: generate random pull request message
+  image: git.ar21.de/tom/push-message-randomizer:latest
+  pull: true
+  when:
+    - event: push
 - name: create pull request (prod)
   image: johnwalkerx/gitea-pull-request-create-plugin:latest
   pull: true
+  commands:
+    - PLUGIN_PR_BODY_MESSAGE="$(cat message.txt)"
   settings:
+    pr_body_message: ""
     gitea_address: https://git.ar21.de
     gitea_token:
       from_secret: FORGEJO_API
@@ -63,6 +71,8 @@ steps:
     pr_body: |
       ### ℹ Dashboard image update
 
+      $${PLUGIN_PR_BODY_MESSAGE}
+
       ### Configuration
 
       📅 **Schedule**: Branch creation - At any time, Automerge - At any time.
@@ -79,7 +89,10 @@ steps:
 - name: create pull request (staging)
   image: johnwalkerx/gitea-pull-request-create-plugin:latest
   pull: true
+  commands:
+    - PLUGIN_PR_BODY_MESSAGE="$(cat message.txt)"
   settings:
+    pr_body_message: ""
     gitea_address: https://git.ar21.de
     gitea_token:
       from_secret: FORGEJO_API
@@ -91,6 +104,8 @@ steps:
     pr_body: |
       ### ℹ Dashboard image update
 
+      $${PLUGIN_PR_BODY_MESSAGE}
+
       ### Configuration
 
       📅 **Schedule**: Branch creation - At any time, Automerge - At any time.