introduce continous deployment

Author: Umut Oezdemir

.github/workflows/cd.yml

@@ -0,0 +1,30 @@
+name: CD
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docker:
+    name: Build and Push Docker Images
+    runs-on: ubuntu-latest
+    needs: [ci]  # Docker image should be built after CI jobs are successful.
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Build and push Docker images using Docker Compose
+        run: |
+          docker-compose build
+          docker-compose push