Added command line options parsing and possibility to override config

Barsik.csproj

@@ -10,6 +10,7 @@
   <ItemGroup>
     <PackageReference Include="ini-parser" Version="2.5.2" />
     <PackageReference Include="NLog" Version="4.7.4" />
+    <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.20574.7" />
   </ItemGroup>
 
 </Project>

Program.cs

@@ -1,6 +1,9 @@
 using IniParser;
 using NLog;
 using System.Collections.Generic;
+using System.CommandLine;
+using System.CommandLine.Invocation;
+using System.Globalization;
 using System.IO;
 using System.Reflection;
 using System.Threading;
@@ -16,6 +19,19 @@ namespace Barsik
 
 		static void Main(string[] args)
         {
+            CultureInfo.CurrentCulture = new CultureInfo("en-US");
+            var rootCommand = new RootCommand();
+            var runCommand = new Command("run")
+            {
+                new Option<string>("--config", () => "", "Path to configuration file")
+            };
+            runCommand.Handler = CommandHandler.Create<string>(RunService);
+            rootCommand.AddCommand(runCommand);
+            rootCommand.InvokeAsync(args).Wait();
+        }
+
+        static void RunService(string configPath)
+		{
             Logging.Setup();
             logger.Info("Barsik monitoring service starting");
 
@@ -24,8 +40,12 @@ namespace Barsik
             units = new List<BaseMonitoringUnit>();
 
             var configParser = new FileIniDataParser();
+            if (string.IsNullOrEmpty(configPath))
+            {
                 string assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
-			var data = configParser.ReadFile(Path.Combine(assemblyFolder, "barsik.ini"));
+                configPath = Path.Combine(assemblyFolder, "barsik.ini");
+            }
+            var data = configParser.ReadFile(configPath);
             foreach (var section in data.Sections)
             {
                 if (section.SectionName.StartsWith("Unit"))