Add a script for trimming storage

roles/mastodon/tasks/main.yml

@@ -28,3 +28,5 @@
     src: docker-compose.yml.j2
     dest: /home/mastodon/live/docker-compose.yml
   notify: "docker-compose up"
+
+- import_tasks: maintenance.yml

roles/mastodon/tasks/maintenance.yml

@@ -0,0 +1,5 @@
+---
+- name: Install storage trimmer
+  template:
+    src: trim_storage.sh.j2
+    dest: /usr/local/bin/trim_storage.sh

roles/mastodon/templates/trim_storage.sh.j2

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+DAYS=5
+DOCKER_IMAGE=live-web-1
+LOGFILE=/tmp/media_remove.log
+
+REMOVED=$(/usr/bin/docker exec -i $DOCKER_IMAGE /opt/mastodon/bin/tootctl media remove --days $DAYS 2>&1 | egrep -e '^Removed')
+
+echo "$(date +%I): $REMOVED" >> $LOGFILE