feat: support docker-ci workflow

.dockerignore

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+README.md
+LICENSE
+.github
+
+.next
+node_modules

.github/workflows/docker-ci.yaml

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+name: Docker Image CI
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: programzmh/next-whois-ui:latest

Dockerfile

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+# create a nexjs dockerfile template
+FROM node:18-alpine
+
+WORKDIR /app
+
+COPY . .
+
+RUN npm install -g pnpm
+RUN pnpm install
+
+RUN pnpm build
+
+ENV NODE_ENV=production
+
+EXPOSE 3000
+
+CMD ["pnpm", "start"]