feat: add GitHub Actions workflow for building Docker image

.github/workflows/docker-image

@@ -0,0 +1,47 @@
+
+name: DockerHub CI
+
+on:
+  release:
+    types: [published]
+env:
+  DOCKERHUB_REPO: ${{ secrets.DOCKERHUB_USERNAME }}/ktransformers
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Move Docker data directory
+        run: |
+          sudo systemctl stop docker
+          sudo mkdir -p /mnt/docker
+          sudo rsync -avz /var/lib/docker/ /mnt/docker
+          sudo rm -rf /var/lib/docker 
+          sudo ln -s /mnt/docker /var/lib/docker
+          sudo systemctl start docker
+
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          platforms: |
+            linux/amd64
+            linux/arm64
+          tags: |
+            ${{ env.DOCKERHUB_REPO }}:latest
+            ${{ env.DOCKERHUB_REPO }}:${{ github.event.release.tag_name }}
+