feat: add node as shell type

act/model/workflow.go

@@ -639,6 +639,8 @@ func (s *Step) ShellCommand() string {
 		shellCommand = "cmd /D /E:ON /V:OFF /S /C \"CALL \"{0}\"\""
 	case "powershell":
 		shellCommand = "powershell -command . '{0}'"
+	case "node":
+		shellCommand = "node {0}"
 	default:
 		shellCommand = s.Shell
 	}

act/runner/step_run.go

@@ -127,6 +127,8 @@ func (sr *stepRun) setupShellCommand(ctx context.Context) (name, script string,
 		runPrepend = "@echo off"
 	case "python":
 		name += ".py"
+	case "node":
+		name += ".js"
 	}
 
 	script = fmt.Sprintf("%s\n%s\n%s", runPrepend, script, runAppend)

act/runner/testdata/shells/node/push.yml

@@ -0,0 +1,25 @@
+on: push
+env:
+  MY_SHELL: node
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - shell: ${{ env.MY_SHELL }}
+        run: |
+          console.log(process.version)
+  check-container:
+    runs-on: ubuntu-latest
+    container: node:16-buster-slim
+    steps:
+      - shell: ${{ env.MY_SHELL }}
+        run: |
+          console.log(process.version)
+  check-job-default:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: ${{ env.MY_SHELL }}
+    steps:
+      - run: |
+          console.log(process.version)