license: polish and add checker

Author: m4sterchain

.github/workflows/license.yml

@@ -0,0 +1,31 @@
+# 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: License Check
+
+on: [push, pull_request]
+
+jobs:
+  license:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Check License Header
+        uses: apache/skywalking-eyes/header@501a28d2fb4a9b962661987e50cf0219631b32ff
+        # with:
+        #   log: debug # optional: set the log level. The default value is `info`.
+        #   config: .licenserc.yaml # optional: set the config file. The default value is `.licenserc.yaml`.
+        #   token: # optional: the token that license eye uses when it needs to comment on the pull request. Set to empty ("") to disable commenting on pull request. The default value is ${{ github.token }}
+        #   mode: # optional: Which mode License-Eye should be run in. Choices are `check` or `fix`. The default value is `check`. 

.licenserc.yaml

@@ -32,8 +32,7 @@ header:
     - '.gitattributes'
     - '.github/ISSUE_TEMPLATE/**'
     - '.gitmodules'
-    - 'DISCLAIMER*'
-    - 'KEYS'
+    - 'DISCLAIMER'
     - 'LICENSE'
     - 'NOTICE'
     - 'licenses'