Add proper support for working-directory & fix command builder (#772)

* fix: align other Docker executors to print action

* fix: formatting

* fix: add proper workdir support

* fix: replace script filepath after slice creation

* fix: match substring so it works for pwsh

+ rename containerPath to scriptPath to reflect what value it contains

pkg/runner/run_context.go

@@ -151,7 +151,7 @@ func (rc *RunContext) startJobContainer() common.Executor {
 			rc.JobContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
 			rc.JobContainer.Start(false),
 			rc.JobContainer.UpdateFromEnv("/etc/environment", &rc.Env),
-			rc.JobContainer.Exec([]string{"mkdir", "-m", "0777", "-p", ActPath}, rc.Env, "root"),
+			rc.JobContainer.Exec([]string{"mkdir", "-m", "0777", "-p", ActPath}, rc.Env, "root", ""),
 			rc.JobContainer.CopyDir(copyToPath, rc.Config.Workdir+string(filepath.Separator)+".", rc.Config.UseGitIgnore).IfBool(copyWorkspace),
 			rc.JobContainer.Copy(ActPath+"/", &container.FileEntry{
 				Name: "workflow/event.json",
@@ -169,9 +169,10 @@ func (rc *RunContext) startJobContainer() common.Executor {
 		)(ctx)
 	}
 }
-func (rc *RunContext) execJobContainer(cmd []string, env map[string]string) common.Executor {
+
+func (rc *RunContext) execJobContainer(cmd []string, env map[string]string, user, workdir string) common.Executor {
 	return func(ctx context.Context) error {
-		return rc.JobContainer.Exec(cmd, env, "")(ctx)
+		return rc.JobContainer.Exec(cmd, env, user, workdir)(ctx)
 	}
 }
 

pkg/runner/step_context.go

@@ -37,7 +37,7 @@ type StepContext struct {
 
 func (sc *StepContext) execJobContainer() common.Executor {
 	return func(ctx context.Context) error {
-		return sc.RunContext.execJobContainer(sc.Cmd, sc.Env)(ctx)
+		return sc.RunContext.execJobContainer(sc.Cmd, sc.Env, "", sc.Step.WorkingDirectory)(ctx)
 	}
 }
 
@@ -195,12 +195,6 @@ func (sc *StepContext) setupShellCommand() common.Executor {
 			step.WorkingDirectory = rc.Run.Workflow.Defaults.Run.WorkingDirectory
 		}
 		step.WorkingDirectory = rc.ExprEval.Interpolate(step.WorkingDirectory)
-		if step.WorkingDirectory != "" {
-			_, err = script.WriteString(fmt.Sprintf("cd %s\n", step.WorkingDirectory))
-			if err != nil {
-				return err
-			}
-		}
 
 		run := rc.ExprEval.Interpolate(step.Run)
 		step.Shell = rc.ExprEval.Interpolate(step.Shell)
@@ -233,7 +227,7 @@ func (sc *StepContext) setupShellCommand() common.Executor {
 		run = runPrepend + "\n" + run + "\n" + runAppend
 
 		log.Debugf("Wrote command '%s' to '%s'", run, scriptName)
-		containerPath := fmt.Sprintf("%s/%s", rc.Config.ContainerWorkdir(), scriptName)
+		scriptPath := fmt.Sprintf("%s/%s", rc.Config.ContainerWorkdir(), scriptName)
 
 		if step.Shell == "" {
 			step.Shell = rc.Run.Job().Defaults.Run.Shell
@@ -242,13 +236,22 @@ func (sc *StepContext) setupShellCommand() common.Executor {
 			step.Shell = rc.Run.Workflow.Defaults.Run.Shell
 		}
 		scCmd := step.ShellCommand()
-		scResolvedCmd := strings.Replace(scCmd, "{0}", containerPath, 1)
+
+		var finalCMD []string
 		if step.Shell == "pwsh" || step.Shell == "powershell" {
-			sc.Cmd = strings.SplitN(scResolvedCmd, " ", 3)
+			finalCMD = strings.SplitN(scCmd, " ", 3)
 		} else {
-			sc.Cmd = strings.Fields(scResolvedCmd)
+			finalCMD = strings.Fields(scCmd)
 		}
 
+		for k, v := range finalCMD {
+			if strings.Contains(v, `{0}`) {
+				finalCMD[k] = strings.Replace(v, `{0}`, scriptPath, 1)
+			}
+		}
+
+		sc.Cmd = finalCMD
+
 		return rc.JobContainer.Copy(rc.Config.ContainerWorkdir(), &container.FileEntry{
 			Name: scriptName,
 			Mode: 0755,
@@ -307,6 +310,7 @@ func (sc *StepContext) newStepContainer(ctx context.Context, image string, cmd [
 	})
 	return stepContainer
 }
+
 func (sc *StepContext) runUsesContainer() common.Executor {
 	rc := sc.RunContext
 	step := sc.Step
@@ -485,7 +489,7 @@ func (sc *StepContext) runAction(actionDir string, actionPath string, localActio
 			}
 			containerArgs := []string{"node", path.Join(containerActionDir, action.Runs.Main)}
 			log.Debugf("executing remote job container: %s", containerArgs)
-			return rc.execJobContainer(containerArgs, sc.Env)(ctx)
+			return rc.execJobContainer(containerArgs, sc.Env, "", "")(ctx)
 		case model.ActionRunsUsingDocker:
 			return sc.execAsDocker(ctx, action, actionName, containerActionDir, actionLocation, rc, step, localAction)
 		case model.ActionRunsUsingComposite:

pkg/runner/testdata/basic/push.yml

@@ -8,6 +8,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
+      - run: '[[ "$(pwd)" == "${GITHUB_WORKSPACE}" ]]'
       - run: echo ${{ env.TEST }} | grep value
       - run: env
       - uses: docker://node:12-buster-slim

pkg/runner/testdata/dir with spaces/push.yml

@@ -0,0 +1,7 @@
+---
+jobs:
+  dir-with-spaces:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "$PWD"
+'on': push

pkg/runner/testdata/workdir/push.yml

@@ -1,15 +1,24 @@
-name: workdir
 on: push
 
+defaults:
+  run:
+    working-directory: /tmp
+
 jobs:
   workdir:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: /root
     steps:
-    - run: mkdir -p "${GITHUB_WORKSPACE}/workdir"
-    - run: '[[ "$(pwd)" == "${GITHUB_WORKSPACE}/workdir" ]]'
-      working-directory: workdir
+      - run: '[[ "$(pwd)" == "/root" ]]'
 
-  noworkdir:
+      - run: mkdir -p "${GITHUB_WORKSPACE}/workdir"
+
+      - run: '[[ "$(pwd)" == "${GITHUB_WORKSPACE}/workdir" ]]'
+        working-directory: workdir
+
+  top-level-workdir:
     runs-on: ubuntu-latest
     steps:
-      - run: '[[ "$(pwd)" == "${GITHUB_WORKSPACE}" ]]'
+      - run: '[[ "$(pwd)" == "/tmp" ]]'