Add some recommended GitLab cleanup tasks (fixes #110)

roles/gitlab/files/gitlab-cleanup.service

+[Unit]
+Description=GitLab Cleanup
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/docker exec -t gitlab gitlab-ctl registry-garbage-collect --delete-manifests --delete-untagged
+ExecStart=/usr/bin/docker exec -t gitlab gitlab-rake gitlab:cleanup:project_uploads DRY_RUN=false
+ExecStart=/usr/bin/docker exec -t gitlab gitlab-rake gitlab:cleanup:orphan_job_artifact_files DRY_RUN=false DEBUG=1 LIMIT=1000

roles/gitlab/files/gitlab-cleanup.timer

+[Unit]
+Description=GitLab Cleanup
+
+[Timer]
+OnCalendar=weekly
+Persistent=true
+RandomizedDelaySec=1h
+
+[Install]
+WantedBy=timers.target

roles/gitlab/tasks/main.yml

@@ -102,3 +102,12 @@
   when: configure_firewall
   tags:
     - firewall
+
+- name: copy gitlab-cleanup timer and service
+  copy: src={{ item }} dest=/etc/systemd/system/{{ item }} owner=root group=root mode=0644
+  with_items:
+    - gitlab-cleanup.timer
+    - gitlab-cleanup.service
+
+- name: activate systemd timers for gitlab-cleanup
+  systemd: name=gitlab-cleanup.timer enabled=yes state=started daemon-reload=yes