template: sample scripts for each function. also reworked the backup script + checked it with actual_server

template/example_server-env

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+export BUCKET_PATH="${BACKUP_BUCKET}/example"
+
+export VOLUME_PATH="${HOME}/${USER}-data"
+export PORT=999999
+PUID=$(id -u "$USER")
+export PUID
+PGID=$(id -g "$USER")
+export PGID