Fix Woodpecker config (20)

.woodpecker.yml

@@ -1,5 +1,18 @@
 
 pipeline:
+  key_check:
+    image: alpine
+    secrets: [ ssh_key ]
+    commands:
+      - apk add openssh
+      - printf '%s\n' "$${SSH_KEY}" > key
+      - chmod 600 key
+      - ssh-keygen -l -f key
+    when:
+      branch:
+        include: [ main ]
+      event: [push, deployment]
+
   # Build step: generates the files for Hexo site
   build:
     image: node:12.22.1