retain 3 copies of backups

playbooks/backup-docker-volumes.yml

@@ -6,7 +6,6 @@
     # corrsponds to which category of backups will be used.
     # determined based on the docker labels.
     schedule: nightly
-    docker_backup_retain_count: 7
 
   pre_tasks:
     - name: Include vault variables.
@@ -31,7 +30,7 @@
         name: chatton.docker_backup.docker_s3_backup
       vars:
         container_backup: "{{ container_item | regex_replace('^\\/', '') }}"
-        docker_backup_retain_count: 7
+        docker_backup_retain_count: 3
       with_items: "{{ container_names }}"
       loop_control:
         loop_var: container_item