Improve nix setup

README.md

@@ -12,6 +12,31 @@ just init  # Will init the database, and build the app image
 just run   # Will run the lwn-sub-snoozer to update the database and the RSS file
 ```
 
+## Nix setup
+
+For my server, I have the following setup:
+
+```nix
+systemd.timers."rssify-update" = {
+  wantedBy = [ "timers.target" ];
+    timerConfig = {
+      OnBootSec = "5m";
+      OnUnitActiveSec = "12h";
+      Unit = "rssify-update.service";
+    };
+};
+
+systemd.services."rssify-update" = {
+  script = ''
+    ${pkgs.rssify}/bin/echo "Hello World"
+  '';
+  serviceConfig = {
+    Type = "oneshot";
+    User = "root";
+  };
+};
+```
+
 ## TODO
 
 - [ ] Nix service with timer