Update github actions workflow for AWS ECR deployment

.github/workflows/docker-image.yml

@@ -1,18 +1,16 @@
-name: Publish Docker image
+name: Build and Push Docker Image to AWS ECR
 
 on:
-
- push:
-    branches: [ main ]
- pull_request:
-    branches: [ main ]
+  push:
+    branches:
+      - main
 
 jobs:
-  push_to_registry:
-    name: Push Docker image to Docker HUB
+  build-and-push:
     runs-on: ubuntu-latest
+
     steps:
-      - name: Check out the repo
+      - name: Checkout code
         uses: actions/checkout@v3
 
       - name: Log in to AWS ECR