Update ci.yml

Author: Chen-Luan

.github/workflows/ci.yml

@@ -3,28 +3,73 @@ on:
   push:
     branches:
       - main
+  pull_request:
+    branches:
+      - main
+
 permissions:
   contents: write
+
 jobs:
+  test:
+    name: Test MkDocs Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.x
+
+      - name: Cache dependencies
+        uses: actions/cache@v3
+        with:
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          path: ~/.cache/pip
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: |
+          pip install jieba mkdocs-material mkdocs-static-i18n
+      
+      - name: Build the site for testing
+        run: mkdocs build --strict
+
   deploy:
+    name: Deploy to GitHub Pages
+    needs: test
     runs-on: ubuntu-latest
+    
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v4
+
       - name: Configure Git Credentials
         run: |
           git config user.name github-actions[bot]
           git config user.email 41898282+github-actions[bot]@users.noreply.github.com
-      - uses: actions/setup-python@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
         with:
           python-version: 3.x
-      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV 
-      - uses: actions/cache@v3
+
+      - name: Cache dependencies
+        uses: actions/cache@v3
         with:
-          key: mkdocs-material-${{ env.cache_id }}
-          path: .cache
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          path: ~/.cache/pip
           restore-keys: |
-            mkdocs-material-
-      - run: pip install jieba
-      - run: pip install mkdocs-material
-      - run: pip install mkdocs-static-i18n
-      - run: mkdocs gh-deploy --force
+            ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: |
+          pip install jieba mkdocs-material mkdocs-static-i18n
+
+      - name: Deploy to gh-pages
+        run: mkdocs gh-deploy --force