Support for docker steps in host environment (#1674)

* Support for docker steps in host environment

* removed workdir changes

Author: shubham149

pkg/runner/action.go

@@ -356,7 +356,10 @@ func newStepContainer(ctx context.Context, step step, image string, cmd []string
 	envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
 
 	binds, mounts := rc.GetBindsAndMounts()
-
+	networkMode := fmt.Sprintf("container:%s", rc.jobContainerName())
+	if rc.IsHostEnv(ctx) {
+		networkMode = "default"
+	}
 	stepContainer := container.NewContainer(&container.NewContainerInput{
 		Cmd:         cmd,
 		Entrypoint:  entrypoint,
@@ -367,7 +370,7 @@ func newStepContainer(ctx context.Context, step step, image string, cmd []string
 		Name:        createContainerName(rc.jobContainerName(), stepModel.ID),
 		Env:         envList,
 		Mounts:      mounts,
-		NetworkMode: fmt.Sprintf("container:%s", rc.jobContainerName()),
+		NetworkMode: networkMode,
 		Binds:       binds,
 		Stdout:      logWriter,
 		Stderr:      logWriter,

pkg/runner/run_context.go

@@ -384,14 +384,18 @@ func (rc *RunContext) interpolateOutputs() common.Executor {
 
 func (rc *RunContext) startContainer() common.Executor {
 	return func(ctx context.Context) error {
-		image := rc.platformImage(ctx)
-		if strings.EqualFold(image, "-self-hosted") {
+		if rc.IsHostEnv(ctx) {
 			return rc.startHostEnvironment()(ctx)
 		}
 		return rc.startJobContainer()(ctx)
 	}
 }
 
+func (rc *RunContext) IsHostEnv(ctx context.Context) bool {
+	image := rc.platformImage(ctx)
+	return strings.EqualFold(image, "-self-hosted")
+}
+
 func (rc *RunContext) stopContainer() common.Executor {
 	return rc.stopJobContainer()
 }