Add: build doc github workflow

Author: xingoxu

.github/workflows/deploy-docs.yml

@@ -0,0 +1,42 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js 14
+      uses: actions/setup-node@v1
+      with:
+        node-version: 14
+    - name: Install Dependency
+      run: npm ci
+    - name: Config Internal Git
+      run: |
+        git config --global user.email "action@github.com"
+        git config --global user.name "GitHub Action"
+    - name: Clone Doc History
+      uses: actions/checkout@v2
+      with:
+        ref: 'gh-pages'
+        path: 'doc-dist'
+    - name: Clean Doc Directory
+      run: |
+        cd doc-dist
+        ls | grep -v '.git' | xargs rm -r
+        cd ../
+    - name: Build Docs
+      run: npm run docs:build
+    - name: Copy & Deploy
+      run: |
+        cp -r docs/.vuepress/dist/* doc-dist/
+        cd doc-dist
+        git add -A
+        git commit -m 'Deploy docs'
+        git push

package.json

@@ -3,7 +3,7 @@
   "version": "7.0.0",
   "description": "Node.js SDK for LINE Messaging API",
   "engines": {
-    "node": ">=8"
+    "node": ">=10"
   },
   "main": "dist/index.js",
   "types": "dist/index.d.ts",