Add service role

roles/container/tasks/main.yml

@@ -1,5 +1,20 @@
 ---
 
+- name: Deprecation warning
+  debug:
+    msg: >
+      The role uumas.docker.container has been deprecated. You should switch to
+      uumas.docker.service instead. It has the following syntax changes:\n
+      * container name suffixes are separated by - instead of _\n
+        * May require updating hostnames in configs or database\n
+        * May require fixing any ports, database_passwords or
+      docker_vhost_domains variables to new syntax\n
+        * May require renaming database user and database for existing database
+      * docker_volume_type defaults to bind. Set it to named if you want to
+      continue using named volumes.\n
+      uumas.docker.container doesn't receive any updates and may be removed
+      after May 2024
+
 - name: Container role initialization
   import_tasks: init.yml