ci: introduce ci build for docs

.github/workflows/test-build.yml

@@ -0,0 +1,22 @@
+name: Docusaurus build
+on:
+    push:
+        branches:
+            - main
+    pull_request: 
+        branches: 
+            - main
+jobs:
+    test-build:
+        name: Test build
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+            - uses: actions/setup-node@v3
+              with:
+                  node-version: 18
+                  cache: yarn
+            - name: Install dependencies
+              run: yarn install --frozen-lockfile
+            - name: Build
+              run: yarn build