introduce docker image updater

.github/workflows/Dockerfile

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+FROM alpine:latest AS builder
+
+ARG TARGETPLATFORM
+
+COPY . /tmp/artifacts
+RUN mkdir -p /tmp/output; \
+    cd /tmp/artifacts; \
+    ARTIFACT_ARCH=""; \
+    if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
+        ARTIFACT_ARCH="x86_64"; \
+    elif [ "$TARGETPLATFORM" = "linux/arm64" ]; then \
+        ARTIFACT_ARCH="aarch64"; \
+    else \
+        echo "Unsupported architecture: $TARGETARCH"; \
+        exit 1; \
+    fi; \
+    cp /tmp/artifacts/easytier-linux-${ARTIFACT_ARCH}/* /tmp/output;
+
+FROM alpine:latest
+
+WORKDIR /app
+COPY --from=builder --chmod=755 /tmp/output/* /usr/local/bin
+
+# tcp
+EXPOSE 11010/tcp
+# udp
+EXPOSE 11010/udp
+# wg
+EXPOSE 11011/udp
+# ws
+EXPOSE 11011/tcp
+# wss
+EXPOSE 11012/tcp
+
+ENTRYPOINT ["easytier-core"]

.github/workflows/docker.yml

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+name: EasyTier Docker
+
+on:
+  workflow_dispatch:
+    inputs:
+      run_id:
+        description: 'The run id of EasyTier-Core Action in EasyTier repo'
+        type: number
+        default: 10228239965
+        required: true
+      image_tag:
+        description: 'Tag for this image build'
+        type: string
+        default: 'v1.2.0'
+        required: true
+      mark_latest:
+        description: 'Mark this image as latest'
+        type: boolean
+        default: false
+        required: true
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        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: Download artifact
+        id: download-artifact
+        uses: dawidd6/action-download-artifact@v6
+        with:
+          github_token: ${{secrets.GITHUB_TOKEN}}
+          run_id: ${{ inputs.run_id }}
+          repo: EasyTier/EasyTier
+          path: docker_context
+      - name: List files
+        run: |
+          ls -l -R .
+      -
+        name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: ./docker_context
+          platforms: linux/amd64,linux/arm64
+          push: true
+          file: .github/workflows/Dockerfile
+          tags: easytier/easytier:${{ inputs.image_tag }}${{ inputs.mark_latest && ',easytier/easytier:latest' || '' }},