Use hardcoded docker override

src/Runner.Worker/Container/DockerCommandManager.cs

@@ -11,7 +11,7 @@ using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Worker.Container
 {
-    [ServiceLocator(Default = typeof(DockerCommandManager))]
+    [ServiceLocator(Default = typeof(DockerHookCommandManager))]
     public interface IDockerCommandManager : IRunnerService
     {
         string DockerPath { get; }
@@ -188,7 +188,7 @@ namespace GitHub.Runner.Worker.Container
             return outputStrings.FirstOrDefault();
         }
 
-        public async Task<int> DockerRun(IExecutionContext context, ContainerInfo container, EventHandler<ProcessDataReceivedEventArgs> stdoutDataReceived, EventHandler<ProcessDataReceivedEventArgs> stderrDataReceived)
+        public virtual async Task<int> DockerRun(IExecutionContext context, ContainerInfo container, EventHandler<ProcessDataReceivedEventArgs> stdoutDataReceived, EventHandler<ProcessDataReceivedEventArgs> stderrDataReceived)
         {
             IList<string> dockerOptions = new List<string>();
             // OPTIONS
@@ -258,7 +258,7 @@ namespace GitHub.Runner.Worker.Container
             return await ExecuteDockerCommandAsync(context, "run", optionsString, container.ContainerEnvironmentVariables, stdoutDataReceived, stderrDataReceived, context.CancellationToken);
         }
 
-        public async Task<int> DockerStart(IExecutionContext context, string containerId)
+        public virtual async Task<int> DockerStart(IExecutionContext context, string containerId)
         {
             return await ExecuteDockerCommandAsync(context, "start", containerId, context.CancellationToken);
         }

src/Runner.Worker/Container/DockerHookCommandManager.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Worker.Handlers;
+
+namespace GitHub.Runner.Worker.Container
+{
+    public class DockerHookCommandManager : DockerCommandManager
+    {
+        public override async Task<int> DockerStart(IExecutionContext context, string containerId)
+        {
+            // check for env var
+            // execute script
+            
+            // Create the handler data.
+            var path = "/home/ferenc/Documents/runner/_layout/docker_run.sh";
+            var scriptDirectory = Path.GetDirectoryName(path);
+            var stepHost = HostContext.CreateService<IDefaultStepHost>();
+            var prependPath = string.Join(Path.PathSeparator.ToString(), context.Global.PrependPath.Reverse<string>());
+            Dictionary<string, string> inputs = new()
+            {
+                ["script"] = $"CONT_ID={containerId} " + "/usr/bin/bash" + " " + path,
+                // /bin/bash
+                ["shell"] = ScriptHandlerHelpers.GetDefaultShellForScript(path, Trace, prependPath)
+            };
+
+            // Create the handler
+            var handlerFactory = HostContext.GetService<IHandlerFactory>();
+            var handler = handlerFactory.Create(
+                            context,
+                            action: new ScriptReference(),
+                            stepHost,
+                            new ScriptActionExecutionData(),
+                            inputs,
+                            environment: new Dictionary<string, string>(VarUtil.EnvironmentVariableKeyComparer),
+                            context.Global.Variables,
+                            actionDirectory: scriptDirectory,
+                            localActionContainerSetupSteps: null);
+            handler.PrepareExecution(ActionRunStage.Main); // TODO: find out stage
+
+            await handler.RunAsync(ActionRunStage.Main);
+
+            return ((int?) handler.ExecutionContext.CommandResult) ?? 0;
+        }
+    }
+}