build customized image with guest branch to ghcr

.github/workflows/customize-build-guest.yml

@@ -0,0 +1,41 @@
+name: Customize Build (guest token) with ghcr.io
+
+on:
+  push:
+    paths-ignore:
+      - "README.md"
+    branches:
+      - guest__customize
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build-docker:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          version: latest
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: ${{ env.REGISTRY }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ github.repository }}:guest,${{ env.REGISTRY }}/${{ github.repository }}:guest-${{ github.sha }}