Add Dockerfile and workflow for static hosting image.

.github/workflows/docker-image-static.yml

@@ -0,0 +1,36 @@
+name: Docker Image CI - static
+
+on:
+  release:
+    types: [published]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    -
+      name: Checkout
+      uses: actions/checkout@v3
+    - 
+      name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+    - 
+      name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+    - 
+      name: Login to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    -
+      name: Build and push
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        file: static.Dockerfile
+        push: true
+        tags: wongsaang/chatgpt-ui-client:latest-static,wongsaang/chatgpt-ui-client:${{ github.ref_name }}-static