ah

src/Runner.Worker/ActionRunner.cs

@@ -135,6 +135,9 @@ namespace GitHub.Runner.Worker
                 ExecutionContext.SetGitHubContext("event_path", workflowFile);
             }
 
+            var gitHubActionPath = ExecutionContext.GetGitHubContext("action_path");
+            Trace.Info($"githubactionpath: {gitHubActionPath}");
+
             // Setup container stephost for running inside the container.
             if (ExecutionContext.Global.Container != null)
             {

src/Runner.Worker/ExecutionContext.cs

@@ -98,7 +98,7 @@ namespace GitHub.Runner.Worker
         // others
         void ForceTaskComplete();
         void RegisterPostJobStep(IStep step);
-        IStep CreateCompositeStep(string scopeName, IActionRunner step, DictionaryContextData inputsData, Dictionary<string, string> envData, string actionDirectory);
+        IStep CreateCompositeStep(string scopeName, IActionRunner step, DictionaryContextData inputsData, Dictionary<string, string> envData);
     }
 
     public sealed class ExecutionContext : RunnerService, IExecutionContext
@@ -258,8 +258,7 @@ namespace GitHub.Runner.Worker
             string scopeName,
             IActionRunner step,
             DictionaryContextData inputsData,
-            Dictionary<string, string> envData,
+            Dictionary<string, string> envData)
-            string actionDirectory)
         {
             step.ExecutionContext = Root.CreateChild(_record.Id, step.DisplayName, _record.Id.ToString("N"), scopeName, step.Action.ContextName, logger: _logger, insideComposite: true, cancellationTokenSource: CancellationTokenSource.CreateLinkedTokenSource(_cancellationTokenSource.Token));
             step.ExecutionContext.ExpressionValues["inputs"] = inputsData;
@@ -276,9 +275,6 @@ namespace GitHub.Runner.Worker
                 envContext[pair.Key] = new StringContextData(pair.Value ?? string.Empty);
             }
 
-            // Add path to action directory as an environment variable. 
-            envContext["GITHUB_ACTION_PATH"] = new StringContextData(actionDirectory);
-
             step.ExecutionContext.ExpressionValues["env"] = envContext;
 
             return step;
@@ -425,6 +421,7 @@ namespace GitHub.Runner.Worker
             ArgUtil.NotNullOrEmpty(name, nameof(name));
             var githubContext = ExpressionValues["github"] as GitHubContext;
             githubContext[name] = new StringContextData(value);
+            Trace.Info($"GitHub Context: {StringUtil.ConvertToJson(githubContext)}");
         }
 
         public string GetGitHubContext(string name)

src/Runner.Worker/GitHubContext.cs

@@ -9,6 +9,7 @@ namespace GitHub.Runner.Worker
         private readonly HashSet<string> _contextEnvWhitelist = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
             "action",
+            "action_path",
             "actor",
             "api_url",
             "base_ref",

src/Runner.Worker/Handlers/CompositeActionHandler.cs

@@ -56,6 +56,10 @@ namespace GitHub.Runner.Worker.Handlers
                 childScopeName = $"__{Guid.NewGuid()}";
             }
 
+            // Set GITHUB_ACTION_PATH
+            Trace.Info($"ActionDirectory: {ActionDirectory}");
+            ExecutionContext.SetGitHubContext("action_path", ActionDirectory);
+
             foreach (Pipelines.ActionStep actionStep in actionSteps)
             {
                 var actionRunner = HostContext.CreateService<IActionRunner>();
@@ -63,7 +67,10 @@ namespace GitHub.Runner.Worker.Handlers
                 actionRunner.Stage = stage;
                 actionRunner.Condition = actionStep.Condition;
 
-                var step = ExecutionContext.CreateCompositeStep(childScopeName, actionRunner, inputsData, Environment, ActionDirectory);
+                var step = ExecutionContext.CreateCompositeStep(childScopeName, actionRunner, inputsData, Environment);
+
+                // step.ExecutionContext.ExpressionValues["github"] = ExecutionContext.ExpressionValues["github"] as GitHubContext;
+
                 compositeSteps.Add(step);
             }
 
@@ -177,7 +184,8 @@ namespace GitHub.Runner.Worker.Handlers
                 var actionStep = step as IActionRunner;
 
                 // Set GITHUB_ACTION
-                step.ExecutionContext.SetGitHubContext("action", step.ExecutionContext.GetFullyQualifiedContextName());
+                // For composite + their nested steps, we want the all of them to have the same GITHUB_ACTION
+                step.ExecutionContext.SetGitHubContext("action", ExecutionContext.GetGitHubContext("action"));
 
                 try
                 {

src/Runner.Worker/Handlers/ScriptHandler.cs

@@ -265,6 +265,11 @@ namespace GitHub.Runner.Worker.Handlers
                 {
                     foreach (var env in runtimeContext.GetRuntimeEnvironmentVariables())
                     {
+                        if (runtimeContext is GitHubContext)
+                        {
+                            Trace.Info($"gh context key: {env.Key}");
+                            Trace.Info($"gh context Value: {env.Value}");
+                        }
                         Environment[env.Key] = env.Value;
                     }
                 }