chore(server): split container image into parts

roles/server/defaults/main.yml

@@ -20,9 +20,20 @@ nextcloud_database_pass: ~
 nextcloud_database_host: localhost
 
 nextcloud_container_name: nextcloud
-nextcloud_container_image: docker.io/library/nextcloud
+nextcloud_container_image_server: docker.io
+nextcloud_container_image_namespace: library
+nextcloud_container_image_name: nextcloud
+nextcloud_container_image: >-2
+  {{
+    [
+      nextcloud_container_image_server,
+      nextcloud_container_image_namespace,
+      nextcloud_container_image_name,
+    ] | join('/')
+  }}
 nextcloud_container_image_variant: "-fpm-alpine"
-nextcloud_container_image_ref: "{{ nextcloud_container_name }}:{{ nextcloud_version }}{{ nextcloud_container_image_variant }}"
+nextcloud_container_image_ref: >-2
+  {{ nextcloud_container_image }}:{{ nextcloud_version }}{{ nextcloud_container_image_variant }}
 nextcloud_container_image_force_source: false
 nextcloud_container_restart_policy: "unless-stopped"
 

roles/server/tasks/main.yml

@@ -29,7 +29,7 @@
     group: "{{ item.group }}"
   loop: "{{ nextcloud_paths }}"
 
-- name: Ensure docker container for nextcloud is pulled
+- name: Ensure docker container image '{{ nextcloud_container_image_ref }}' for nextcloud is pulled
   community.docker.docker_image:
     name: "{{ nextcloud_container_image_ref }}"
     state: present