Add act tool for local GitHub Actions testing

README.md

@@ -64,6 +64,7 @@
 
 | Tool                                                                       | Description                                                                                                                                 |
 |----------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------|
+| **[act](tools/act)**                                                       | Run GitHub Actions locally using Docker for faster workflow development and testing.                                                        |
 | **[Argo](tools/Argo)**                                                     | Open Source Kubernetes native workflows, events, CI and CD.                                                                                 |
 | **[ArgoCD](tools/ArgoCD)**                                                 | Declarative GitOps continuous delivery tool for Kubernetes applications.                                                                    |
 | **[Bamboo](tools/Bamboo)**                                                 | Atlassian's CI/CD server that ties automated builds, tests, and releases together in a single workflow.                                     |

tools/GitHub-Actions/README.md

@@ -151,6 +151,12 @@ After pushing your workflow file to the repository, GitHub Actions will automati
 
 This allows you to debug failures, monitor CI/CD progress in real-time, and verify that your pipeline stages complete successfully.
 
+### Step 2: Testing Workflows Locally
+
+Before pushing changes to GitHub, you can test workflows locally using **[act](../act)** - a tool that runs GitHub Actions on your local machine using Docker. This speeds up development by letting you iterate on workflows without committing and pushing changes.
+
+Learn more: **[act - Run GitHub Actions Locally](../act/README.md)**
+
 ## Advanced Example: Building and Publishing Docker Images
 
 The following workflow demonstrates how to build a Docker image and push it to a container registry:

tools/act/README.md

@@ -0,0 +1,132 @@
+# act
+
+![act Logo](../../logos/act.svg)
+
+## Overview
+
+Run your GitHub Actions locally! `act` is a command-line tool that allows you to test and debug GitHub Actions workflows on your local machine using Docker. It eliminates the need to commit and push changes to GitHub just to test workflow modifications, significantly speeding up the development cycle for CI/CD pipelines.
+
+## Key Features
+
+- **Local Workflow Execution**: Run GitHub Actions workflows locally without pushing to GitHub
+- **Docker-Based**: Uses Docker containers to simulate GitHub-hosted runners
+- **Event Simulation**: Trigger workflows with custom event payloads
+- **Secret Management**: Support for environment variables and secrets locally
+- **Fast Iteration**: Test workflow changes instantly without waiting for cloud runners
+- **Multiple Runner Images**: Supports ubuntu, macos, and windows runner environments
+- **Workflow Debugging**: Step through workflow execution to identify issues quickly
+
+## Getting Started
+
+### Installation
+
+```bash
+# macOS
+brew install act
+
+# Linux
+curl https://raw.githubusercontent.com/nektos/act/master/install.sh | sudo bash
+
+# Windows (using Chocolatey)
+choco install act-cli
+
+# Using Go
+go install github.com/nektos/act@latest
+```
+
+### Basic Usage
+
+```bash
+# List available workflows in current repository
+act -l
+
+# Run the default event (push)
+act
+
+# Run a specific workflow event
+act pull_request
+
+# Run a specific job
+act -j test
+
+# Run with custom event payload
+act -e event.json
+
+# Use a specific runner image
+act -P ubuntu-latest=catthehacker/ubuntu:act-latest
+
+# Run a specific workflow file
+act -W .github/workflows/ci.yml
+```
+
+### Example: Testing a Workflow Locally
+
+Create a simple workflow file `.github/workflows/test.yml`:
+
+```yaml
+name: Test Workflow
+on: [push]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run tests
+        run: echo "Running tests..."
+```
+
+Test it locally:
+
+```bash
+# Run the push event workflow
+act push
+
+# Run a specific workflow file with a specific event
+act push -W .github/workflows/test.yml
+
+# Dry run to see what would happen
+act -n
+
+# Run with verbose output
+act -v
+```
+
+#### Example Output
+
+When running the test workflow, you'll see output similar to this:
+
+![act Test Workflow Output](images/act-test-workflow-output.png)
+
+### Working with Secrets
+
+```bash
+# Create .secrets file
+echo "GITHUB_TOKEN=your_token" > .secrets
+
+# Run workflow with secrets
+act --secret-file .secrets
+
+# Or pass secrets as environment variables
+act -s GITHUB_TOKEN=your_token
+```
+
+### Using Custom Runner Images
+
+```bash
+# Use a smaller image for faster execution
+act -P ubuntu-latest=node:16-buster-slim
+
+# Configure default platforms in .actrc
+cat > ~/.actrc << EOF
+-P ubuntu-latest=catthehacker/ubuntu:act-latest
+-P ubuntu-20.04=catthehacker/ubuntu:act-20.04
+-P ubuntu-18.04=catthehacker/ubuntu:act-18.04
+EOF
+```
+
+## Resources
+
+ - **Documentation & User Guide**: https://nektosact.com/introduction.html
+ - **Official GitHub Repository**: https://github.com/nektos/act
+ - **Releases**: https://github.com/nektos/act/releases
+