Fix multiple instance firebase.. issue on ressource

ManagerService/Services/FirebaseService.cs

@@ -9,10 +9,16 @@ namespace ManagerService.Services
         {
             // Remplace le chemin par le chemin vers ton fichier JSON
             var pathToKey = "C:/Users/ThomasFransolet/Documents/Documents/Perso/MuseeDeLaFraise/mymuseum-3b97f-firebase-adminsdk-sdbbn-7ec3e24a91.json";
+
+            var check = FirebaseApp.DefaultInstance;
+            if (check == null)
+            {
                 FirebaseApp.Create(new AppOptions()
                 {
                     Credential = GoogleCredential.FromFile(pathToKey),
                 });
             }
+            
+        }
     }
 }