[client] Restart netbird-ui post-install in linux deb&rpm (#2992)

.goreleaser_ui.yaml

@@ -50,6 +50,8 @@ nfpms:
       - netbird-ui
     formats:
       - deb
+    scripts:
+      postinstall: "release_files/ui-post-install.sh"
     contents:
       - src: client/ui/netbird.desktop
         dst: /usr/share/applications/netbird.desktop
@@ -67,6 +69,8 @@ nfpms:
       - netbird-ui
     formats:
       - rpm
+    scripts:
+      postinstall: "release_files/ui-post-install.sh"
     contents:
       - src: client/ui/netbird.desktop
         dst: /usr/share/applications/netbird.desktop

release_files/ui-post-install.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# Check if netbird-ui is running
+if pgrep -x -f /usr/bin/netbird-ui >/dev/null 2>&1;
+then
+  runner=$(ps --no-headers -o '%U' -p $(pgrep -x -f /usr/bin/netbird-ui) | sed 's/^[ \t]*//;s/[ \t]*$//')
+  # Only re-run if it was already running
+  pkill -x -f /usr/bin/netbird-ui >/dev/null 2>&1
+  su -l - "$runner" -c 'nohup /usr/bin/netbird-ui > /dev/null 2>&1 &'
+fi