.Net6.0 buildspec.yaml 错误

Question

使用 AWS CodeBuild 构建 .Net6.0 应用程序时出现此错误：

Error: .NET binaries for Lambda function are not correctly installed in the /var/task directory of the image when the image was built. The /var/task directory is missing the required .deps.json file.

这是 buildspec.yaml：

---
phases:
  install:
    runtime-versions:
      dotnet: 6.0
  build:
    commands:
      - dotnet restore -p:PublishReadyToRun=true -p:PublishTrimmed=true
      - dotnet publish --framework net6.0 --runtime linux-x64
    
  post_build:
    commands:    
      - aws cloudformation package --s3-bucket ${s3Bucket} --s3-prefix ${prefix}/artifacts --template-file ${templateFile} --output-template-file ${outputTemplate} --region ${region} 
     

CodeBuild 项目配置为在“aws/codebuild/amazonlinux2-x86_64-standard:4.0”图像上运行。

请帮我找出失败的原因？