🔧 Added backup config

backup.conf

@@ -0,0 +1,14 @@
+## Backup config file for service. To find the syntax for this file,
+## take a look at `man duplicity` or the web docs at this url:
+## http://duplicity.nongnu.org/vers8/duplicity.1.html#sect9
+##
+## Special syntax has been added, a single pound sign line will be
+## interpreted like a variable assignment, a line with two pound
+## signs will be seen as comments.
+
+
+## This make daily backups, and keep them for one months, making 
+## incremental backups and doing a full backup once a week. 
+# RETAIN=2W
+# INCREMENT=1W
+# INTERVAL=1D