Убрал все эти watchers. Написал свой простой как 3 копейки.

PARR.EsppTemplateSyncWorker/Dockerfile

@@ -23,8 +23,6 @@ FROM base AS final
 WORKDIR /app
 COPY --from=publish /app/publish .
 
-ENV DOTNET_USE_POLLING_FILE_WATCHER=true
-
 ENTRYPOINT ["dotnet", "PARR.EsppTemplateSyncWorker.dll"]
 
 ### EXAMPLE ###

PARR.EsppTemplateSyncWorker/Worker.cs

@@ -15,13 +15,7 @@ namespace PARR.EsppTemplateSyncWorker
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
-            //var task = new Task(() =>
-            //{
-            //    templateSyncer.StartWatching();
-            //});
-            //task.Start();
-
-            templateSyncer.StartWatching();
+            await templateSyncer.StartWatchingAsync();
 
             //while (!stoppingToken.IsCancellationRequested)
             //{

PARR.EsppTemplateSyncWorker/appsettings.Development.json

@@ -7,5 +7,8 @@
   },
   "StorageSettings": {
     "StoragePath": "W:\\"
+  },
+  "GlobalSettings": {
+    "CheckIntervalSeconds": 5
   }
 }

PARR.EsppTemplateSyncWorker/appsettings.json

@@ -30,5 +30,8 @@
       "AllowedExtensions": [ ".csv" ],
       "MaxFileSizeMb": 100
     }
+  },
+  "GlobalSettings": {
+    "CheckIntervalSeconds": 30 
   }
 }