Add systemd service and timer for open-webui updates

Introduce a new systemd service that pulls the latest open-webui
Docker image and restarts the associated container. This ensures that
the application is always running the most recent version. Additionally,
a timer is added to schedule this update process to occur every Sunday
at 3 AM, automating the maintenance of the service without manual
intervention. This change enhances the reliability and freshness of
the application deployment.

1 files changed, 30 insertions, 1 deletions

diff --git a/Omni/Cloud/OpenWebui.nix b/Omni/Cloud/OpenWebui.nix
index fe71608..fc662c2 100644
--- a/Omni/Cloud/OpenWebui.nix
+++ b/Omni/Cloud/OpenWebui.nix
@@ -1,4 +1,8 @@
-{config, ...}: let
+{
+  config,
+  pkgs,
+  ...
+}: let
   ports = import ./Ports.nix;
 in {
   config.virtualisation.oci-containers.backend = "docker";
@@ -11,4 +15,29 @@ in {
     };
     extraOptions = ["--network=host"];
   };
+
+  # Add a service that updates and restarts the container
+  config.systemd.services."update-open-webui-aichat" = {
+    description = "pulling new open-webui image and restarting the service";
+    wantedBy = ["multi-user.target"];
+    after = ["network-online.target"];
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = [
+        # Pull the latest image
+        "${pkgs.docker}/bin/docker pull ghcr.io/open-webui/open-webui:main"
+        # Restart the container
+        "${pkgs.systemd}/bin/systemctl stop docker-open-webui-aichat"
+        "${pkgs.systemd}/bin/systemctl start docker-open-webui-aichat"
+      ];
+    };
+  };
+
+  # Add a timer that runs every Sunday at 3 AM
+  config.systemd.timers."update-open-webui-aichat" = {
+    wantedBy = ["timers.target"];
+    timerConfig.OnCalendar = "Sun 03:00:00";
+    timerConfig.Persistent = true;
+    unitConfig.Description = "Weekly timer for pulling new open-webui image and restarting service.";
+  };
 }