Outline: configure backups

files/outline/backup.sh.j2

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+set -eu
+set -o pipefail
+
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_FILE="outline_postgres_${TIMESTAMP}.sql.gz"
+
+echo "Outline: backing up PostgreSQL database"
+
+docker compose --file "{{ base_dir }}/docker-compose.yml" exec \
+    outline_postgres \
+    pg_dump \
+        -U "{{ outline_postgres_user }}" \
+        "{{ outline_postgres_database }}" \
+    | gzip > "{{ postgres_backups_dir }}/${BACKUP_FILE}"
+
+echo "Outline: PostgreSQL backup saved to {{ postgres_backups_dir }}/${BACKUP_FILE}"
+
+echo "Outline: removing old backups"
+
+# Keep only the 3 most recent backups
+keep-files.py "{{ postgres_backups_dir }}" --keep 3
+
+echo "Outline: backup completed successfully."