Simplified timer + update install instructions

files/nxy-db-dump.service

@@ -3,5 +3,4 @@ Description=nxy database dump timer
 
 [Service]
 Type=oneshot
-WorkingDirectory=/home/nxy/backups
-ExecStart=/bin/sh -c "/usr/bin/pg_dump -d nxy_prod > $(date +%Y-%m-%d_%H-%M-%S).sql"
+ExecStart=/bin/sh -c "/usr/bin/pg_dump -d nxy_prod > dump.sql"

files/nxy-db-dump.timer

@@ -2,9 +2,7 @@
 Description=nxy database dump timer
 
 [Timer]
-# Time to wait after booting before we run first time
 OnBootSec=10min
-# Time between running each consecutive time
 OnUnitActiveSec=12h
 
 [Install]