[chore] CI: linux, macos, windows

.github/workflows/main.yml

@@ -2,16 +2,7 @@
 
 name: CI
 
-# Controls when the workflow will run
+on: [push, pull_request]
-on:
-  # Triggers the workflow on push or pull request events but only for the master branch
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
@@ -20,13 +11,15 @@ jobs:
     strategy:
       matrix:
         go: [1.14, 1.17]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Checkout code
       - uses: actions/checkout@v2
 
       - name: Set up Go