chore: add github action for docker hub

.github/workflows/docker-publish.yml

@@ -0,0 +1,30 @@
+name: "Docker Publish"
+
+on:
+  push:
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+jobs:
+  dockerize:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Get version
+        id: get_version
+        # run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
+        run: echo ::set-output name=VERSION::${github.ref} # 支持手动触发
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: moonrailgun/tailchat:${{ steps.get_version.outputs.VERSION }}