feat(with-post-step): create with-post-step action

Author: eloymg

.github/workflows/test-with-post-action.yaml

@@ -0,0 +1,45 @@
+name: Test With Post Step Action
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "actions/with-post-action/**"
+      - ".github/workflows/test-with-post-action.yaml"
+
+  pull_request:
+    paths:
+      - "actions/with-post-action/**"
+      - ".github/workflows/test-with-post-action.yaml"
+    types:
+      - edited
+      - opened
+      - ready_for_review
+      - synchronize
+
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - name: Run Create GitHub App Token action
+        id: command
+        uses: ./actions/create-github-app-token
+        run: |
+          echo "running command"
+          echo "test_output=test_output_content" >> "${GITHUB_OUTPUT}"
+
+      - name: Skip invalid instance
+        uses: ./actions/with-post-step
+        run:
+          echo ${{ steps.command.outputs.test_output }}

actions/with-post-step/README.md

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+# with-post-step
+
+Action to set a command as a post step
+
+Source Code reference: https://github.com/pyTooling/Actions/tree/main/with-post-step

actions/with-post-step/action.yaml

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+# Reference https://github.com/pyTooling/Actions/blob/main/with-post-step/action.yml
+
+name: With post step
+
+description: 'Generic JS Action to execute a main command and set a command as a post step.'
+
+inputs:
+  main:
+    description: 'Main command/script.'
+    required: true
+  post:
+    description: 'Post command/script.'
+    required: true
+  key:
+    description: 'Name of the state variable used to detect the post step.'
+    required: false
+    default: POST
+
+runs:
+  using: 'node24'
+  main: 'main.js'
+  post: 'main.js'

actions/with-post-step/main.js

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+// Reference: https://github.com/pyTooling/Actions/blob/main/with-post-step/main.js
+
+const { spawn } = require("child_process");
+const { appendFileSync } = require("fs");
+const { EOL } = require("os");
+
+function run(cmd) {
+  const subprocess = spawn(cmd, { stdio: "inherit", shell: true });
+  subprocess.on("exit", (exitCode) => {
+    process.exitCode = exitCode;
+  });
+}
+
+const key = process.env.INPUT_KEY.toUpperCase();
+
+if ( process.env[`STATE_${key}`] !== undefined ) { // Are we in the 'post' step?
+  run(process.env.INPUT_POST);
+} else { // Otherwise, this is the main step
+  appendFileSync(process.env.GITHUB_STATE, `${key}=true${EOL}`);
+  run(process.env.INPUT_MAIN);
+}