Refactor to use rsync server

scripts/notify

@@ -1,8 +1,5 @@
 #!/usr/bin/env bash
 
-# Backblaze B2 Bucket
-readonly BUCKET="${B2_BUCKET}"
-
 # Devices to check -- if populated and up, no notifications are sent.
 readonly DEVICES=()
 
@@ -19,6 +16,10 @@ readonly PROJECT="/tmp/yolov7"
 # Notification recipient.
 readonly RECIPIENT="${NOTIFICATION_RECIPIENT}"
 
+# rsync user and server for backups.
+readonly RSYNC_USER="${RSYNC_USER}"
+readonly RSYNC_SERVER="${RSYNC_SERVER}"
+
 acquire_lock () {
   while true; do
     if mkdir "${LOCKFILE}"; then
@@ -63,11 +64,9 @@ notify() {
 upload() {
   local name="$1"
 
-  backblaze-b2 upload-file \
-	       --threads 2 \
-	       "${BUCKET}" \
-	       "${PROJECT}/motion/${name}.jpg" \
-	       "${HOSTNAME}/photo/${name}.jpg"
+  rsync --archive --verbose \
+	"${PROJECT}/motion/${name}.jpg" \
+	"${RSYNC_USER}@${RSYNC_SERVER}:/photo/${name}.jpg"
 }
 
 delete_outdated() {