chore: allow possibility to deploy vitepress from a branch

.github/workflows/branch-deploy.yml

@@ -0,0 +1,68 @@
+name: Deploy VitePress site to GitHub Pages
+
+on: pull_request
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+    contents: read
+    pages: write
+    id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+    group: pages
+    cancel-in-progress: false
+
+jobs:
+    build:
+        env:
+            BRANCH_NAME: ${{ github.ref_name }}
+        runs-on: ubuntu-latest
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v4
+                with:
+                    fetch-depth: 0 # Not needed if lastUpdated is not enabled
+
+            -   name: Install package manager (from package.json)
+                run: |
+                    corepack enable
+                    corepack install
+
+            -   name: Setup Node
+                uses: actions/setup-node@v4
+                with:
+                    node-version: 20
+                    cache: yarn
+
+            -   name: Setup GitHub Pages
+                uses: actions/configure-pages@v4
+
+            -   name: Install dependencies
+                run: yarn install
+
+            -   name: Yarn audit
+                run: yarn audit
+
+            -   name: Build with VitePress
+                env:
+                    GENERATE_BUILD_SIZE_VISUALIZER: true
+                run: yarn build
+
+            -   name: Upload artifact
+                uses: actions/upload-pages-artifact@v3
+                with:
+                    path: packages/docs/.vitepress/dist
+
+    deploy:
+        environment:
+            name: staging
+            url: ${{ steps.deployment.outputs.page_url }}staging
+        needs: build
+        runs-on: ubuntu-latest
+        name: Deploy
+        steps:
+            -   name: Deploy to GitHub Pages
+                id: deployment
+                uses: actions/deploy-pages@v4

packages/docs/.vitepress/config.mts

@@ -1,9 +1,10 @@
+import process             from 'node:process';
 import { kebabCase }       from 'change-case';
 import { defineConfig }    from 'vitepress';
 import { getSidebarItems } from './theme/Shared/Config/Lib/getSidebarItems';
 
 export default defineConfig({
-    base:     '/flyonui-vue/',
+    base:     `/flyonui-vue/${process.env.BRANCH_NAME === undefined ? '' : 'staging'}`,
     rewrites: (id) => {
         const format = '.md';