4. Create a new [Personal Access Token (PAT)](/manuals/security/for-developers/access-tokens.md#create-an-access-token) for Docker Hub. You can name this token `docker-tutorial`. Make sure access permissions include Read and Write.

5. Add the PAT as a **Repository secret** in your GitHub repository, with the name
   `DOCKERHUB_TOKEN`.

6. In your local repository on your machine, run the following command to change
   the origin to the repository you just created. Make sure you change
   `your-username` to your GitHub username and `your-repository` to the name of
   the repository you created.

   ```console
   $ git remote set-url origin https://github.com/your-username/your-repository.git
   ```

7. Run the following commands to stage, commit, and push your local repository to GitHub.

   ```console
   $ git add -A
   $ git commit -m "my commit"
   $ git push -u origin main
   ```

## Step two: Set up the workflow

Set up your GitHub Actions workflow for building, testing, and pushing the image
to Docker Hub.

1. Go to your repository on GitHub and then select the **Actions** tab.

2. Select **set up a workflow yourself**.

   This takes you to a page for creating a new GitHub actions workflow file in
   your repository, under `.github/workflows/main.yml` by default.

3. In the editor window, copy and paste the following YAML configuration.

   ```yaml
   name: ci

   on:
     push:
       branches:
         - main

   jobs:
     build:
       runs-on: ubuntu-latest
       steps:
         - name: Login to Docker Hub
           uses: docker/login-action@v3
           with:
             username: ${{ vars.DOCKER_USERNAME }}
             password: ${{ secrets.DOCKERHUB_TOKEN }}

         - name: Set up Docker Buildx
           uses: docker/setup-buildx-action@v3

         - name: Build and push
           uses: docker/build-push-action@v6
           with:
             platforms: linux/amd64,linux/arm64
             push: true
             tags: ${{ vars.DOCKER_USERNAME }}/${{ github.event.repository.name }}:latest
   ```

   For more information about the YAML syntax for `docker/build-push-action`,
   refer to the [GitHub Action README](https://github.com/docker/build-push-action/blob/master/README.md).

## Step three: Run the workflow

Save the workflow file and run the job.

1. Select **Commit changes...** and push the changes to the `main` branch.

   After pushing the commit, the workflow starts automatically.

2. Go to the **Actions** tab. It displays the workflow.

   Selecting the workflow shows you the breakdown of all the steps.

3. When the workflow is complete, go to your
   [repositories on Docker Hub](https://hub.docker.com/repositories).

   If you see the new repository in that list, it means the GitHub Actions
   successfully pushed the image to Docker Hub.

## Summary

In this section, you learned how to set up a GitHub Actions workflow for your R application.

Related information:

- [Introduction to GitHub Actions](/guides/gha.md)
- [Docker Build GitHub Actions](/manuals/build/ci/github-actions/_index.md)
- [Workflow syntax for GitHub Actions](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions)

## Next steps

Next, learn how you can locally test and debug your workloads on Kubernetes before deploying.