dotnet2docker/action.yml

# action.yml
name: "build docker image and push to code"
description: "build docker image and push to simcu code"
inputs:
  context:
    description: "构建目录（相对仓库根目录，默认 .）。例如后端在 dotnet 目录下时填 dotnet"
    required: false
    default: "."
runs:
  using: "composite"
  steps:
    - name: build .net app
      uses: docker://mcr.microsoft.com/dotnet/sdk:10.0
      with:
        entrypoint: "/bin/bash"
        args: |
          -c 'cd "${{ inputs.context }}" && \
          dotnet publish -r linux-x64 -c Release --self-contained -o dist -p:AssemblyName=App -p:Version=${{ github.ref_name }}'

    # -f 直接指向本 action 内置的 dotnet.Dockerfile，不用再准备/拷贝文件；
    # 构建上下文仍是 context，所以 Dockerfile 里的 COPY dist 取的是构建目录下的发布产物
    - name: build docker image and push
      uses: actions/docker-build-push@main
      with:
        context: ${{ inputs.context }}
        dockerfile: ${{ github.action_path }}/dotnet.Dockerfile