Add Zeabur deployment guide (#2408)

* Add Zeabur deployment guide

* Select Zola version in Zeabur deployment

docs/content/documentation/deployment/zeabur.md

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+title = "Zeabur"
+weight = 50
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+
+In this tutorial, we'll guide you through the process of deploying your Zola site onto the [Zeabur](https://zeabur.com). Zeabur provides a seamless deployment experience, with automatic SSL certificates and global-edge network delivery. Let's get started!
+
+## Prerequisites
+
+- A Zola site project on your local machine.
+- A GitHub account and your Zola site project repository hosted on GitHub.
+- A Zeabur account. If you don't have one, sign up at [here](https://zeabur.com/login).
+
+## Step 1: Create a Project on Zeabur
+
+1. Log in to your Zeabur account.
+2. Navigate to the dashboard and click on the **Create Project** button.
+3. Follow the on-screen instructions to set up a new project.
+
+## Step 2: Push Your Zola Files to GitHub
+
+1. Initialize a Git repository in your Zola project folder if you haven't already:
+
+    ```bash
+    git init
+    git add .
+    git commit -m "Initial commit"
+    ```
+
+2. Push your Zola project to GitHub:
+
+    ```bash
+    git remote add origin <your-github-repo-url>
+    git branch -M main
+    git push -u origin main
+    ```
+
+Replace `<your-github-repo-url>` with the URL of your GitHub repository.
+
+## Step 3: Create a Service on Zeabur
+
+1. Back in your Zeabur dashboard, click on **Create Service**.
+2. Choose the **git** option to connect your GitHub repository.
+
+## Step 4: Select Your Zola Repository
+
+1. From the list of repositories, select the repository where your Zola project is located.
+
+## Step 5: Automatic Deployment
+
+Zeabur will automatically detect that you're deploying a Zola project and will handle the deployment process for you without any additional configuration needed.
+
+To use a specific version of Zola, set [`ZOLA_VERSION`](https://zeabur.com/docs/environment/variables) environment variable in project settings to a valid
+release tag, for example `0.17.2`.
+
+## Step 6: Domain Binding
+
+1. Once the deployment is complete, bind a domain name to your service.
+2. You can choose to use a free `.zeabur.app` subdomain or bind your own custom domain.
+3. Zeabur will automatically provide a free SSL certificate for your domain, ensuring secure browsing for your visitors.
+
+## Step 7: Your Site is Live!
+
+Congratulations! Your Zola site is now deployed and live, served through Zeabur's edge network. 
+
+You can now visit your website at the domain you've set up.