Add auto style code CI

.github/workflows/build-and-push.yml

@@ -11,9 +11,40 @@ env:
 # https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions
 
 jobs:
+  auto_style:
+    name: Auto style code
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+      - name: Install autopep8
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8 autopep8
+      - name: Auto style code with autopep8
+        run: autopep8 --in-place --aggressive --aggressive --max-line-length 180 .
+      - name: Check for changes
+        run: |
+          if [[ `git status --porcelain` ]]; then
+            echo "There are changes after auto-styling the code."
+            git config --global user.name "github-actions[bot]"
+            git config --global user.email "github-actions[bot]@users.noreply.github.com"
+            git add .
+            git commit -m "Auto style code with autopep8"
+            exit 1
+          else
+            echo "No changes detected."
+          fi
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   build:
     name: Test on python ${{ matrix.python-version }}
     runs-on: ubuntu-latest
+    needs: [auto_style]
     strategy:
       # max-parallel: 1
       matrix: