让 GitHub Actions 自动 Build 并 Push Docker 到 Dockcer Hub

最近在写 CheapSteam 的验证相关内容，现在已经可以将它 部署在服务器。为此也制作了一个 Docker 镜像，当然不能每一个版本都靠我手动 Push，和自动发布到 Release 一样，安排上 GitHub Actions 的自动构建。

编写 Actions 配置

这里直接拉 CheapSteam 我写好的 配置文件 过来用。

name: Publish Docker

on:
  push:
    tags:        
      - 'v*'           # Push events to every tag not containing /

    # Pattern matched against refs/tags
jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Set env
      run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
    - name: Test
      run: |
        echo $RELEASE_VERSION
        echo ${{ env.RELEASE_VERSION }}
    - name: Setup .NET
      uses: actions/setup-dotnet@v1
      with:
        dotnet-version: 6.0.x
    - name: Restore dependencies
      run: dotnet restore CheapSteam.UI/CheapSteam.UI/CheapSteam.UI.csproj
    - name: Publish Linux x64
      run: dotnet publish CheapSteam.UI/CheapSteam.UI/CheapSteam.UI.csproj --runtime linux-x64 -p:PublishSingleFile=true --self-contained true -o ./CheapSteam-${{ env.RELEASE_VERSION }}-linux-x64 -c Release
    - name: Edit default listen url
      run: sed -i 's/127.0.0.1/0.0.0.0/g' ./CheapSteam-${{ env.RELEASE_VERSION }}-linux-x64/appsettings.json
    - name: Zip files
      run: zip -r CheapSteam-${{ env.RELEASE_VERSION }}-linux-x64.zip ./CheapSteam-${{ env.RELEASE_VERSION }}-linux-x64
    - name: Copy bin files
      run: cp CheapSteam-${{ env.RELEASE_VERSION }}-linux-x64.zip docker/
    -
      name: Set up QEMU
      uses: docker/setup-qemu-action@v2
    -
      name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2
    -
      name: Login to DockerHub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }}
    -
      name: Edit default dockerfile
      run: sed -i 's/RELEASE_VERSION/${{ env.RELEASE_VERSION }}/g' docker/dockerfile
    -
      name: Build and push
      uses: docker/build-push-action@v3
      with:
        push: true
        tags: sayokurisu/cheapsteam:latest,sayokurisu/cheapsteam:${{ env.RELEASE_VERSION }}
        context: docker

需要关注的地方在

    -
      name: Set up QEMU
      uses: docker/setup-qemu-action@v2
    -
      name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2
    -
      name: Login to DockerHub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }}
    -
      name: Build and push
      uses: docker/build-push-action@v3
      with:
        push: true
        tags: sayokurisu/cheapsteam:latest,sayokurisu/cheapsteam:${{ env.RELEASE_VERSION }}
        context: docker

在 Security -> Actions secrets -> New repository secret 添加 secret.
创建 DOCKERHUB_USERNAME 填写为 Docker Hub 的用户名。
创建 DOCKERHUB_TOKEN 填写为 Access Token.
这样就有了上面的环境变量，接着只需要修改最后一个 step。
context 为项目的 dockerfile 所在文件夹，我这里是在根目录的 docker 文件夹里面。
tags 为要发布的 Docker 的 Tag，可以添加多个，用 ‘,’ 号分隔。
一般改了这些东西就能用，更多的修改请在 官方仓库 查看。