added deploy workflow

.github/workflows/deploy.yml

@@ -0,0 +1,30 @@
+name: Build and Deploy to Docker Hub
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check Out Repo
+      uses: actions/checkout@v2
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Build and Push Docker image
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        file: ./docker/Dockerfile.user
+        push: true
+        tags: ahmed431/paytm-docker:latest  # Replace with your Docker Hub username and repository
+
+    - name: Verify Pushed Image
+      run: docker pull 100xdevs/web-app:latest  # Replace with your Docker Hub username and repository