fix #122 - support actions/checkout for repos other the one for this workflow (#143)

pkg/container/docker_run.go

@@ -105,6 +105,7 @@ func (cr *containerReference) CopyDir(destPath string, srcPath string) common.Ex
 		common.NewInfoExecutor("%sdocker cp src=%s dst=%s", logPrefix, srcPath, destPath),
 		cr.connect(),
 		cr.find(),
+		cr.exec([]string{"mkdir", "-p", destPath}, nil),
 		cr.copyDir(destPath, srcPath),
 	).IfNot(common.Dryrun)
 }

pkg/runner/run_context.go

@@ -113,12 +113,19 @@ func (rc *RunContext) startJobContainer() common.Executor {
 			Stderr:      logWriter,
 		})
 
+		var copyWorkspace bool
+		var copyToPath string
+		if !rc.Config.BindWorkdir {
+			copyToPath, copyWorkspace = rc.localCheckoutPath()
+			copyToPath = filepath.Join("/github/workspace", copyToPath)
+		}
+
 		return common.NewPipelineExecutor(
 			rc.JobContainer.Pull(rc.Config.ForcePull),
 			rc.JobContainer.Remove().IfBool(!rc.Config.ReuseContainers),
 			rc.JobContainer.Create(),
 			rc.JobContainer.Start(false),
-			rc.JobContainer.CopyDir("/github/workspace", rc.Config.Workdir+"/.").IfBool(!rc.Config.BindWorkdir),
+			rc.JobContainer.CopyDir(copyToPath, rc.Config.Workdir+"/.").IfBool(copyWorkspace),
 			rc.JobContainer.Copy("/github/", &container.FileEntry{
 				Name: "workflow/event.json",
 				Mode: 644,
@@ -380,6 +387,24 @@ func (rc *RunContext) getGithubContext() *githubContext {
 	return ghc
 }
 
+func (ghc *githubContext) isLocalCheckout(step *model.Step) bool {
+	if step.Type() != model.StepTypeUsesActionRemote {
+		return false
+	}
+	remoteAction := newRemoteAction(step.Uses)
+	if !remoteAction.IsCheckout() {
+		return false
+	}
+
+	if repository, ok := step.With["repository"]; ok && repository != ghc.Repository {
+		return false
+	}
+	if repository, ok := step.With["ref"]; ok && repository != ghc.Ref {
+		return false
+	}
+	return true
+}
+
 func asString(v interface{}) string {
 	if v == nil {
 		return ""
@@ -421,5 +446,16 @@ func (rc *RunContext) withGithubEnv(env map[string]string) map[string]string {
 	env["GITHUB_WORKSPACE"] = github.Workspace
 	env["GITHUB_SHA"] = github.Sha
 	env["GITHUB_REF"] = github.Ref
+	env["GITHUB_TOKEN"] = github.Token
 	return env
 }
+
+func (rc *RunContext) localCheckoutPath() (string, bool) {
+	ghContext := rc.getGithubContext()
+	for _, step := range rc.Run.Job().Steps {
+		if ghContext.isLocalCheckout(step) {
+			return step.With["path"], true
+		}
+	}
+	return "", false
+}

pkg/runner/step_context.go

@@ -55,7 +55,7 @@ func (sc *StepContext) Executor() common.Executor {
 		)
 	case model.StepTypeUsesActionRemote:
 		remoteAction := newRemoteAction(step.Uses)
-		if remoteAction.Org == "actions" && remoteAction.Repo == "checkout" {
+		if remoteAction.IsCheckout() && rc.getGithubContext().isLocalCheckout(step) {
 			return func(ctx context.Context) error {
 				common.Logger(ctx).Debugf("Skipping actions/checkout")
 				return nil
@@ -232,7 +232,7 @@ func (sc *StepContext) runAction(actionDir string, actionPath string) common.Exe
 			envKey := regexp.MustCompile("[^A-Z0-9-]").ReplaceAllString(strings.ToUpper(inputID), "_")
 			envKey = fmt.Sprintf("INPUT_%s", envKey)
 			if _, ok := sc.Env[envKey]; !ok {
-				sc.Env[envKey] = input.Default
+				sc.Env[envKey] = rc.ExprEval.Interpolate(input.Default)
 			}
 		}
 
@@ -311,6 +311,13 @@ func (ra *remoteAction) CloneURL() string {
 	return fmt.Sprintf("https://github.com/%s/%s", ra.Org, ra.Repo)
 }
 
+func (ra *remoteAction) IsCheckout() bool {
+	if ra.Org == "actions" && ra.Repo == "checkout" {
+		return true
+	}
+	return false
+}
+
 func newRemoteAction(action string) *remoteAction {
 	r := regexp.MustCompile(`^([^/@]+)/([^/@]+)(/([^@]*))?(@(.*))?$`)
 	matches := r.FindStringSubmatch(action)

pkg/runner/testdata/issue-122/main.yaml

@@ -0,0 +1,19 @@
+name: Checkout
+
+on: push
+
+jobs:
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        path: test-subdir1
+    - run: grep "Checkout" test-subdir1/issue-122/main.yaml
+    - uses: actions/checkout@v2
+      with:
+        repository: actions/checkout
+        path: test-subdir2
+    - run: grep "Checkout" test-subdir2/action.yml