add github action to build docker image

.github/workflows/build-image.yml

@@ -0,0 +1,35 @@
+name: Build and Push Docker Image
+
+on:
+    pull_request:
+    push:
+      branches:
+        - refactor
+    workflow_dispatch:
+
+jobs:
+    build:
+      runs-on: ubuntu-latest
+      steps:
+        -
+          name: Checkout
+          uses: actions/checkout@v4
+        -
+          name: Login to Docker Hub
+          uses: docker/login-action@v3
+          with:
+            username: ${{ secrets.DOCKERHUB_USERNAME }}
+            password: ${{ secrets.DOCKERHUB_TOKEN }}
+        -
+          name: Set up Docker Buildx
+          uses: docker/setup-buildx-action@v3
+        -
+          name: Build and push
+          uses: docker/build-push-action@v5
+          with:
+            context: .
+            file: ./Dockerfile
+            push: true
+            tags: |
+                ${{ secrets.DOCKERHUB_USERNAME }}/tidb.ai:latest
+                ${{ secrets.DOCKERHUB_USERNAME }}/tidb.ai:${{ github.sha }}

README.md

@@ -58,6 +58,6 @@ For deploying the application to Vercel, you can use the 'Deploy to Vercel' butt
 * Adapt the system for AWS Redrock Claude3, with an anticipated completion date of April 15th.
 * Finalize the "How It Works" series of documentation by April 30th.
 
-
 ## License
+
 TiDB.AI is open-source under the Apache License, Version 2.0. You can [find it here](/LICENSE.txt).