add container update script

modules/podman.nix

@@ -1,5 +1,47 @@
 { config, pkgs, lib, ... }:
 
+let
+  # System-wide script for updating containers (works with sudo)
+  update-containers-script = pkgs.writeShellScriptBin "update-containers" ''
+    echo "Scanning running containers..."
+    containers=$(podman ps --format "{{.Names}}")
+
+    if [[ -z "$containers" ]]; then
+      echo "No running containers found."
+      exit 0
+    fi
+
+    for container in $containers; do
+      echo "=================================================="
+      echo "Processing container: $container"
+
+      # Get the image used by this container
+      image=$(podman inspect "$container" --format "{{.ImageName}}")
+      echo "Current image: $image"
+
+      # Pull the latest version of the image
+      echo "Pulling latest version of $image..."
+      if podman pull "$image"; then
+        # Check if the image was updated by comparing IDs
+        old_id=$(podman inspect "$container" --format "{{.Image}}")
+        new_id=$(podman inspect "$image" --format "{{.Id}}")
+
+        if [[ "$old_id" != "$new_id" ]]; then
+          echo "New version available! Restarting container..."
+          podman restart "$container"
+          echo "Container $container restarted with new image"
+        else
+          echo "Container $container is already using the latest image"
+        fi
+      else
+        echo "Failed to pull image for $container"
+      fi
+      echo ""
+    done
+
+    echo "Container update scan complete!"
+  '';
+in
 {
   # Container virtualization with Podman
   virtualisation = {
@@ -19,4 +61,8 @@
       # and will be merged with this base configuration
     };
   };
+
+  # Make update-containers available system-wide (works with sudo)
+  environment.systemPackages = [ update-containers-script ];
+
 }