Add CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches:
+      - main
+      - devops-task
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies (vote app)
+        run: |
+          cd vote
+          pip install -r requirements.txt
+
+      - name: Run simple test
+        run: |
+          cd vote
+          python3 -m py_compile app.py