testing another action

.github/workflows/docs.yml

@@ -7,11 +7,40 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
         with:
-          python-version: 3.x
-      - run: pip install mkdocs-material
-      - run: mkdocs gh-deploy --force
+          python-version: '3.8'
+
+      - name: Upgrade pip
+        run: |
+          # install pip=>20.1 to use "pip cache dir"
+          python3 -m pip install --upgrade pip
+
+      - name: Get pip cache dir
+        id: pip-cache
+        run: echo "::set-output name=dir::$(pip cache dir)"
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.pip-cache.outputs.dir }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: python3 -m pip install -r ./requirements.txt
+
+      - run: mkdocs build
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./site
+          publish_branch: develop