guides: update gitlab (#5130)

Co-authored-by: Sarah Rainsberger <[email protected]>

src/content/docs/en/guides/deploy/gitlab.mdx

@@ -14,7 +14,8 @@ Check out [the official GitLab Pages Astro example project](https://gitlab.com/p
 ## How to deploy
 
 1. Set the correct `site` in `astro.config.mjs`.
-2. Set `outDir:public` in `astro.config.mjs`. This setting instructs Astro to put the static build output in a folder called `public`, which is the folder required by GitLab Pages for exposed files.
+2. Rename the `public/` directory to `static`.
+3. Set `outDir:public` in `astro.config.mjs`. This setting instructs Astro to put the static build output in a folder called `public`, which is the folder required by GitLab Pages for exposed files.
 
    If you were using the [`public/` directory](/en/core-concepts/project-structure/#public) as a source of static files in your Astro project, rename it and use that new folder name in `astro.config.mjs` for the value of `publicDir`.
 
@@ -24,36 +25,35 @@ Check out [the official GitLab Pages Astro example project](https://gitlab.com/p
    import { defineConfig } from 'astro/config';
 
    export default defineConfig({
-     sitemap: true,
-     site: 'https://astro.build/',
+     site: 'https://<user>.gitlab.io',
+     base: '/<project-name>'
      outDir: 'public',
      publicDir: 'static',
    });
    ```
 
-3. Create a file called `.gitlab-ci.yml` in the root of your project with the content below. This will build and deploy your site whenever you make changes to your content:
+4. Create a file called `.gitlab-ci.yml` in the root of your project with the content below. This will build and deploy your site whenever you make changes to your content:
 
    ```yaml
    # The Docker image that will be used to build your app
    image: node:lts
 
-   pages:
-     cache:
-       paths:
-         - node_modules/
-     script:
-       # Specify the steps involved to build your app here
-       - npm install
-       - npm run build
-
-     artifacts:
-       paths:
-         # The folder that contains the built files to be published.
-         # This must be called "public".
-         - public
-
-     only:
-       # Trigger a new build and deploy only when there is a push to the
-       # branch(es) below
-       - main
+    before_script:
+      - npm ci
+
+    pages:
+      script:
+        # Specify the steps involved to build your app here
+        - npm run build
+
+      artifacts:
+        paths:
+          # The folder that contains the built files to be published.
+          # This must be called "public".
+          - public
+
+      only:
+        # Trigger a new build and deploy only when there is a push to the
+        # branch(es) below
+        - main
    ```