Fix coturn container/volume separation: use COTURN_CONTAINER for container_name and map COTURN_VOLUME to /var/lib/coturn

Details:
- Removed anonoumys volume
- Renamed container_name variable to COTURN_CONTAINER
- Added dedicated COTURN_VOLUME with _data suffix for persistence
- Mount COTURN_VOLUME into /var/lib/coturn

Reference: https://chatgpt.com/share/68da6f12-b238-800f-932b-e37c8a50dddd

roles/web-svc-coturn/templates/docker-compose.yml.j2

@@ -3,7 +3,7 @@
   coturn:
 {% include 'roles/docker-container/templates/base.yml.j2' %}
     image: {{ COTURN_IMAGE }}:{{ COTURN_VERSION }}
-    container_name: {{ COTURN_VOLUME }}
+    container_name: {{ COTURN_CONTAINER }}
     network_mode: {{ COTURN_NETWORK_MODE }}
 {% if COTURN_NETWORK_MODE == 'bridge' %}
     ports:
@@ -16,6 +16,7 @@
     volumes:
       - "{{ COTURN_TLS_CERT_PATH }}:{{ COTURN_TLS_CERT_PATH }}:ro"
       - "{{ COTURN_TLS_KEY_PATH }}:{{ COTURN_TLS_KEY_PATH }}:ro"
+      - "{{ COTURN_VOLUME }}:/var/lib/coturn"
     command: >
 {% if COTURN_USER_AUTH_ENABLED | bool %}
       --lt-cred-mech

roles/web-svc-coturn/vars/main.yml

@@ -8,7 +8,8 @@ domain:                     "{{ domains | get_domain(application_id) }}"
 ## Docker 
 COTURN_VERSION:             "{{ applications | get_app_conf(application_id, 'docker.services.' ~ entity_name ~ '.version') }}"
 COTURN_IMAGE:               "{{ applications | get_app_conf(application_id, 'docker.services.' ~ entity_name ~ '.image') }}"
-COTURN_VOLUME:              "{{ entity_name }}"
+COTURN_VOLUME:              "{{ entity_name }}_data"
+COTURN_CONTAINER:           "{{ entity_name }}"
 COTURN_REALM:               "{{ domain }}"
 COTURN_NETWORK_MODE:        "{{ applications | get_app_conf(application_id, 'docker.services.' ~ entity_name ~ '.network_mode') }}"