Create build-and-push.yml

.github/workflows/build-and-push.yml

@@ -0,0 +1,31 @@
+name: Build and Push go-ethereum Image
+
+on:
+  pull_request:
+    types:
+      - closed
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'CI:Build')
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push Docker image
+        run: |
+          docker build -t ${{ secrets.DOCKER_USERNAME }}/go-ethereum:latest .
+          docker push ${{ secrets.DOCKER_USERNAME }}/go-ethereum:latest