Fix critical discrepancies found during validation audit

- Fix cert resolver name (cloudflare -> letsencrypt)
- Fix volume paths (/mnt/nas -> /data)
- Add missing custom port mappings
- Add privileged/capability flags
- Add 8 new roles: portainer, n8n, nodered, influxdb, guacamole, watchtower, rtlamr2mqtt, telegraf
- Fix Traefik template (ports, ACME path, wildcard cert)
- Add extra volume mounts for media services

roles/watchtower/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+watchtower_compose_dir: "{{ docker_compose_base }}/watchtower"
+watchtower_image: "containrrr/watchtower"

roles/watchtower/tasks/main.yml

@@ -0,0 +1,14 @@
+---
+- name: Create watchtower compose directory
+  file:
+    path: "{{ watchtower_compose_dir }}"
+    state: directory
+- name: Deploy watchtower compose file
+  template:
+    src: docker-compose.yml.j2
+    dest: "{{ watchtower_compose_dir }}/docker-compose.yml"
+  notify: restart watchtower
+- name: Start watchtower
+  community.docker.docker_compose_v2:
+    project_src: "{{ watchtower_compose_dir }}"
+    state: present

roles/watchtower/templates/docker-compose.yml.j2

@@ -0,0 +1,14 @@
+services:
+  watchtower:
+    image: {{ watchtower_image }}
+    container_name: watchtower
+    restart: unless-stopped
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - /data/watchtower/config.json:/config.json
+    networks:
+      - {{ docker_network_name }}
+
+networks:
+  {{ docker_network_name }}:
+    external: true