Enhancing logging around containers

src/Agent.Sdk/Knob/AgentKnobs.cs

@@ -875,5 +875,12 @@ public class AgentKnobs
             "If true, use structured enhanced logging format with timestamps, components, and operations",
             new EnvironmentKnobSource("AZP_USE_ENHANCED_LOGGING"),
             new BuiltInDefaultKnobSource("false"));
+
+        public static readonly Knob EnableEnhancedContainerDiagnostics = new Knob(
+            nameof(EnableEnhancedContainerDiagnostics),
+            "When enabled, uses ContainerOperationProviderEnhanced with detailed tracing and duration logging for container operations",
+            new PipelineFeatureSource("EnableEnhancedContainerDiagnostics"),
+            new EnvironmentKnobSource("AGENT_ENABLE_ENHANCED_CONTAINER_LOGGING"),
+            new BuiltInDefaultKnobSource("false"));
     }
 }

src/Agent.Worker/Container/DockerCommandManager.cs

@@ -82,7 +82,7 @@ public async Task<DockerVersion> DockerVersion(IExecutionContext context)
             }
 
             Version clientVersion = null;
-            var clientVersionMatchResult = verRegex.Match(serverVersionStr);
+            var clientVersionMatchResult = verRegex.Match(clientVersionStr);
             if (clientVersionMatchResult.Success && !string.IsNullOrEmpty(clientVersionMatchResult.Value))
             {
                 if (!Version.TryParse(clientVersionMatchResult.Value, out clientVersion))
@@ -498,6 +498,7 @@ private static async Task<int> ExecuteDockerCommandAsyncWithRetries(IExecutionCo
                 retryCount++;
             }
 
+            context.Output(StringUtil.Loc("DockerCommandFinalExitCode", command, exitCode));
             return exitCode;
         }
 

src/Agent.Worker/ContainerOperationProvider.cs

@@ -1208,4 +1208,4 @@ private void PublishTelemetry(
             publishTelemetryCmd.ProcessCommand(executionContext, cmd);
         }
     }
-}
+}