fix: able to change localhost's private key

bootstrap/helpers/remoteProcess.php

@@ -5,6 +5,7 @@ use App\Data\CoolifyTaskArgs;
 use App\Enums\ActivityTypes;
 use App\Models\Application;
 use App\Models\ApplicationDeploymentQueue;
+use App\Models\PrivateKey;
 use App\Models\Server;
 use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Model;
@@ -148,3 +149,44 @@ function decode_remote_command_output(?ApplicationDeploymentQueue $application_d
 
     return $formatted;
 }
+
+function refreshPrivateKey(PrivateKey $private_key)
+{
+    foreach ($private_key->servers as $server) {
+        // Delete the old ssh mux file to force a new one to be created
+        Storage::disk('ssh-mux')->delete($server->muxFilename());
+        if (session('currentTeam')->id) {
+            session('currentTeam')->privateKeys = PrivateKey::where('team_id', session('currentTeam')->id)->get();
+        }
+    }
+}
+
+function validateServer(Server $server)
+{
+    try {
+        refreshPrivateKey($server->privateKey);
+        $uptime = instant_remote_process(['uptime'], $server);
+        if (!$uptime) {
+            $uptime = 'Server not reachable.';
+            throw new \Exception('Server not reachable.');
+        }
+        $server->settings->is_reachable = true;
+
+        $dockerVersion = instant_remote_process(['docker version|head -2|grep -i version'], $server, false);
+        if (!$dockerVersion) {
+            $dockerVersion = 'Not installed.';
+            throw new \Exception('Docker not installed.');
+        }
+        $server->settings->is_usable = true;
+        return [
+            "uptime" => $uptime,
+            "dockerVersion" => $dockerVersion,
+        ];
+    } catch (\Exception $e) {
+        $server->settings->is_reachable = false;
+        $server->settings->is_usable = false;
+        throw $e;
+    } finally {
+        $server->settings->save();
+    }
+}