service: Add support for mounting entire copied directory

roles/service/tasks/validation.yaml

@@ -19,3 +19,9 @@
     msg: "Template mount source file name needs to end in .j2. The file {{ item.source }} of {{ service_name }} doesn't."
   when: "item.source | split('.') | last != 'j2'"
   loop: "{{ _service_template_mounts }}"
+
+- name: Fail if copy mount source doesn't end with /
+  ansible.builtin.fail:
+    msg: "Copy mount source name must end with /. The file {{ item.source }} of {{ service_name }} doesn't"
+  when: "not item.source.endswith('/')"
+  loop: "{{ _service_copy_mounts }}"