added github action

.github/workflows/main.yml

@@ -0,0 +1,19 @@
+name: scp files
+on: [push]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: copy file via ssh password
+      uses: appleboy/scp-action@master
+      with:
+        host: ${{ secrets.HOST }}
+        username: ${{ secrets.USERNAME }}
+        key: ${{ secrets.SSH_KEY}}
+        passphrase: ${{ secrets.KEY_PASS }}
+        port: ${{ secrets.PORT }}
+        source: "*"
+        target: "/home/mdbook/wiki/src/"