Add basic docker backup

backup/docker_backup.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+HOME=/home/nathan
+DOCKER=$HOME/docker
+BACKUP=$HOME/backup/
+DIRS=("homer" "npm" "portainer" "vaultwarden" "wg-easy")
+REMOTE=alphavps
+REMOTEBACKUP=/home/nathan/backups/docker/docker-prod
+
+for i in "${DIRS[@]}"
+do
+	# Stop docker containers before backup incase any moving parts
+	cd $DOCKER/$i
+	docker compose stop
+	rdiff-backup $DOCKER/$i $BACKUP/$i 
+	rdiff-backup --force --remove-older-than 2M $BACKUP/$i
+	docker compose start
+done
+
+# Create the remote directory for backup if it doesn't exist
+ssh $REMOTE mkdir -p $REMOTEBACKUP
+
+# Copy the backup accross
+# -e ssh makes it secure
+rsync -azh -e ssh \
+	--delete \
+	$BACKUP \
+	$REMOTE:$REMOTEBACKUP 
+