github-actions详解

github actions 例子

通过使用 github-actions, 可以在自己的仓库中自动化地执行软件开发工作流。以我的博客工作流举例，当提交代码到远程仓库的 source 分支时，安装所有依赖，并将生成的静态页面文件部署到 master 分支上，具体的配置如下

name: Build and Deploy
on: 
  push:
    branches: 
      - source
jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v2.3.1 # If you're using actions/checkout@v2 you must set persist-credentials to false in most cases for the deployment to work correctly.
        with:
          persist-credentials: false

      - name: Install and Build 🔧 # This example project is built using npm and outputs the result to the 'build' folder. Replace with the commands required to build your project, or remove this step entirely if your site is pre-built.
        run: |
          npm install
          npm run build

      - name: Deploy 🚀
        uses: JamesIves/github-pages-deploy-action@4.1.5
        with:
          BRANCH: master # The branch the action should deploy to.
          FOLDER: public # The folder the action should deploy.

github actions 语法解释

该 workflow 文件位于 ./github/workflows 中

name, workflow 的名称
on ，触发事件，如：push, pull_request。
jobs , 一系列在相同运行环境中执行的步骤
build-and-deploy，在 jobs下定义的一个 job 的名称
runs-on, 定义 job 的运行时环境
steps, 定义一组执行步骤
name:Checkout 执行步骤的名称
uses:actions/checkout@v2.3.1 该执行步骤使用社区提供的 action, 名称为 checkout，v2.3.1 为该 action 的标签，详情参见 checkout in github actions marketplace
with 定义 action 使用的变量
run 定义 job 需要执行的命令

引用链接

Workflow syntax for GitHub Actions