Use node20_1 for sleepCommand when running container (#4929)

Author: rumyax

src/Agent.Sdk/Knob/AgentKnobs.cs

@@ -654,6 +654,13 @@ public class AgentKnobs
             new PipelineFeatureSource("CheckIfTaskNodeRunnerIsDeprecated"),
             new BuiltInDefaultKnobSource("false"));
 
+        public static readonly Knob UseNode20ToStartContainer = new Knob(
+            nameof(UseNode20ToStartContainer),
+            "If true, the agent will use Node 20 to start docker container when executing container job and the container platform is the same as the host platform.",
+            new RuntimeKnobSource("AZP_AGENT_USE_NODE20_TO_START_CONTAINER"),
+            new PipelineFeatureSource("UseNode20ToStartContainer"),
+            new BuiltInDefaultKnobSource("false"));
+
         public static readonly Knob EnableNewSecretMasker = new Knob(
             nameof(EnableNewSecretMasker),
             "If true, the agent will use new SecretMasker with additional filters & performance enhancements",

src/Agent.Worker/ContainerOperationProvider.cs

@@ -539,7 +539,7 @@ private async Task StartContainerAsync(IExecutionContext executionContext, Conta
                 }
                 else
                 {
-                    node = container.TranslateToContainerPath(Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Externals), "node", "bin", $"node{IOUtil.ExeExtension}"));
+                    node = container.TranslateToContainerPath(Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Externals), AgentKnobs.UseNode20ToStartContainer.GetValue(executionContext).AsBoolean() ? NodeHandler.Node20_1Folder : NodeHandler.NodeFolder, "bin", $"node{IOUtil.ExeExtension}"));
 
                     // if on Mac OS X, require container to have node
                     if (PlatformUtil.RunningOnMacOS)

src/Agent.Worker/Handlers/NodeHandler.cs

@@ -13,9 +13,6 @@
 using System.Linq;
 using System.Collections.Generic;
 using System.Threading;
-using Microsoft.TeamFoundation.Common.Internal;
-using Microsoft.VisualStudio.Services.Agent.Worker.Telemetry;
-using Newtonsoft.Json;
 using StringUtil = Microsoft.VisualStudio.Services.Agent.Util.StringUtil;
 
 namespace Microsoft.VisualStudio.Services.Agent.Worker.Handlers