add ci for docbot (#72)

* add ci for docbot

Signed-off-by: tison <wander4096@gmail.com>
diff --git a/.github/workflows/docbot-unit.yml b/.github/workflows/docbot-unit.yml
new file mode 100644
index 0000000..c11349e
--- /dev/null
+++ b/.github/workflows/docbot-unit.yml
@@ -0,0 +1,38 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+name: Docbot Unit Tests
+on:
+  pull_request:
+    branches:
+      - master
+    paths:
+      - '.github/workflows/**'
+      - 'docbot/**'
+
+jobs:
+  unit-test:
+    name: Unit Tests
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.18
+      - name: Go test
+        working-directory: docbot
+        run: go test -v ./...