如何阻止Azure DevOps部署Azure Function时自动执行pip install

你已将依赖包打包进部署压缩包，但部署仍会触发pip install，原因是Azure Function默认部署流程会自动执行构建步骤。要阻止该行为，只需添加应用设置并调整流水线配置：

解决方案步骤 #

1. 添加应用设置禁用自动构建
   设置SCM_DO_BUILD_DURING_DEPLOYMENT为false即可跳过部署阶段的自动构建（包括pip install），有两种设置方式：

   • Azure门户手动配置：进入Function App的「配置」→「应用程序设置」，新增键为SCM_DO_BUILD_DURING_DEPLOYMENT、值为false的设置项。

   • 流水线自动配置：修改AzureRmWebAppDeployment@4任务，添加appSettings参数，部署时自动配置该设置：

     - task: AzureRmWebAppDeployment@4
       displayName: Azure Function App Deploy
       inputs:
         appType: 'functionAppLinux'
         deployToSlotOrASE: true
         DeploymentType: 'zipDeploy'
         packageForLinux: '$(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip'
         runtimeStack: 'PYTHON|3.11'
         appSettings: '-SCM_DO_BUILD_DURING_DEPLOYMENT false'
     

2. 确认压缩包结构合规
   确保.python_packages/lib/site-packages目录位于压缩包根目录下，Azure Function运行时会直接加载该目录内的依赖，无需重新安装。

修改后的完整流水线配置 #

trigger:
- main
variables:
  workingDirectory: '$(System.DefaultWorkingDirectory)'

steps:
  - task: UsePythonVersion@0
    displayName: 'Use Python 3.11'
    inputs:
      versionSpec: 3.11
  - bash: |
      pip install --target="./.python_packages/lib/site-packages" -r ./requirements.txt
    workingDirectory: $(workingDirectory)
    displayName: 'Install application dependencies'
  - task: ArchiveFiles@2
    displayName: 'Generate ZIP'
    inputs:
      rootFolderOrFile: '$(workingDirectory)'
      includeRootFolder: false
      archiveType: zip
      archiveFile: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip

  - publish: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
    artifact: drop

  - task: AzureRmWebAppDeployment@4
    displayName: Azure Function App Deploy
    inputs:
      appType: 'functionAppLinux'
      deployToSlotOrASE: true
      DeploymentType: 'zipDeploy'
      packageForLinux: '$(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip'
      runtimeStack: 'PYTHON|3.11'
      appSettings: '-SCM_DO_BUILD_DURING_DEPLOYMENT false'

内容的提问来源于stack exchange，提问作者Auryn