feat(CD): add CD pipeline workflow

.github/workflows/deploy.yml

@@ -0,0 +1,34 @@
+name: Deploy to Server
+
+on:
+  push:
+    branches:
+      - main # or 'master', or your preferred branch for deployment
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest # The runner environment for this job
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4 # Action to checkout your repository code
+
+      - name: Set up SSH
+        uses: webfactory/ssh-agent@v0.9.0 # Action to set up SSH agent
+        with:
+          ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }} # Your server's SSH private key
+
+      - name: Add Server to Known Hosts
+        run: |
+          mkdir -p ~/.ssh
+          ssh-keyscan -H your_server_ip >> ~/.ssh/known_hosts # Replace with your server's IP
+          chmod 600 ~/.ssh/known_hosts
+
+      - name: Deploy via SSH
+        run: |
+          ssh -i ~/.ssh/id_rsa -o StrictHostKeyChecking=no ${{ secrets.SSH_USER }}@${{ secrets.SSH_SERVER }} << 'EOF'
+            cd ~/cover-letter # Replace with your project's path on the server
+            git pull origin main # or your branch
+            docker compose down
+            docker compose up -d --build
+          EOF