Generate WordPress compose from the site list during provision.

Each host mounts wp-content and gets a compose file from inventory instead of a hand-copied one. Also allow LAN TCP 8020 so abc_voice is reachable through UFW.

requirements.yml

@@ -2,3 +2,5 @@
 collections:
   - name: community.general
     version: ">=8.0.0"
+  - name: ansible.posix
+    version: ">=1.5.0"