Jenkins to Actions migrations powered by GitHub Actions Importer

These instructions will guide you through configuring a GitHub Codespaces environment that will be used in subsequent labs that demonstrate how to use GitHub Actions Importer to migrate Jenkins pipelines to GitHub Actions.

These steps must be completed prior to starting other labs.

Create your own repository for these labs

Ensure that you have created a repository using the actions/importer-labs as a template.

Configure your codespace

Start a new codespace.
- Click the Code button on your repository's landing page.
- Click the Codespaces tab.
- Click Create codespaces on main to create the codespace.
- After the codespace has initialized there will be a terminal present.
Verify the GitHub Actions Importer CLI is installed and working. More information on the GitHub Actions Importer extension for the official GitHub CLI can be found here.
- Run the following command in the codespace's terminal:
```
gh actions-importer version
```
- Verify the output is similar to below.
```
$ gh actions-importer version
gh version 2.14.3 (2022-07-26)
gh actions-importer        github/gh-actions-importer v0.1.12
actions-importer/cli       unknown
```
- If gh actions-importer version did not produce similar output, refer to the troubleshooting guide.

Bootstrap a Jenkins server

Execute the Jenkins setup script that will start a container with a Jenkins server running inside of it. This script should be executed when starting a new codespace or restarting an existing one.
- Run the following command from the codespace's terminal to start a Jenkins server:
```
./jenkins/bootstrap/setup.sh
```
- After some time, a pop-up box should appear with a link to the URL for your Jenkins server.
- You can also access the URL by going to the Ports tab in your terminal. Right-click the URL listed under the Local Address and click the Open in Browser tab.
Open the Jenkins server in your browser and use the following credentials to authenticate:
- Username: admin
- Password: password
Once authenticated, you should see a Jenkins server with a few predefined pipelines.

Labs for Jenkins

Perform the following labs to learn more about Actions migrations with GitHub Actions Importer:

Troubleshoot the GitHub Actions Importer CLI

The CLI extension for GitHub Actions Importer can be manually installed by following these steps:

Verify you are in the codespace terminal
Run this command from within the codespace terminal:
```
gh extension install github/gh-actions-importer
```

Verify the result of the install contains:

$ gh extension install github/gh-actions-importer
✓ Installed extension github/gh-actions-importer

If you get an error similar to the image below, then click the link in the terminal output to authorize the token.
- Restart the codespace after clicking the link.
Verify GitHub Actions Importer CLI extension is installed and working by running the following command from the codespace terminal:
```
gh actions-importer version
```

Troubleshooting the Jenkins server

Follow these steps if the Jenkins server does not start correctly after running the setup script:

On the left side of the codespace, navigate to the Docker tab.
Under the Containers tab you should see a docker container named jenkins:actions-importer listed with a green play button ▶

If you see the jenkins:actions-importer container, but it has a red stopped symbol next to it ▢, right-click the container and click start. The container should begin running again.
If the container does not start even after trying to start it manually, right-click the jenkins:actions-importer container and click the remove button. Then, attempt to start the Jenkins server again by following the steps here.