Broken autogenerated build.sh script

[donsokolone]

Bug Report

I'm having an issue with deploying Azure Web App (of type webAppLinux) due to a bug in generated build.sh script for my pipeline configuration.

Here is the build log output:

Starting: Deploy Azure Web App : <CENSORED>
==============================================================================
Task         : Azure Web App
Description  : Deploy an Azure Web App for Linux or Windows
Version      : 1.257.0
Author       : Microsoft Corporation
Help         : https://aka.ms/azurewebapptroubleshooting
==============================================================================
Got service connection details for Azure App Service:'<CENSORED>'
Package deployment using ZIP Deploy initiated.
Updating submodules.
Preparing deployment for commit id 'f940ddb7-1'.
PreDeployment: context.CleanOutputPath False
PreDeployment: context.OutputPath /home/site/wwwroot
Repository path is /tmp/zipdeploy/extracted
Running oryx build...
Command: oryx build /tmp/zipdeploy/extracted -o /home/site/wwwroot --platform python --platform-version 3.11 -p virtualenv_name=antenv --log-file /tmp/build-debug.log  -i /tmp/8ddbd43eec68bfd --compress-destination-dir | tee /tmp/oryx-build.log
Operation performed by Microsoft Oryx, https://github.com/Microsoft/Oryx
You can report issues at https://github.com/Microsoft/Oryx/issues

Oryx Version: 0.2.20250611.1+0649de32f1279969c9023dd41b389cce4bb94493, Commit: 0649de32f1279969c9023dd41b389cce4bb94493, ReleaseTagName: 20250611.1

Build Operation ID: 34612743655faa00
Repository Commit : f940ddb7-1bc8-4900-96ce-1e08bc0b93fe
OS Type           : bullseye
Image Type        : githubactions

Primary SDK Storage URL: https://oryx-cdn.microsoft.io
Backup SDK Storage URL: https://oryxsdks-cdn.azureedge.net
Detecting platforms...
External SDK provider is enabled.
Requesting metadata for platform python from external SDK provider
Requesting metadata for platform python from external SDK provider
Detected following platforms:
  python: 3.11.12
Requesting metadata for platform python from external SDK provider
Version '3.11.12' of platform 'python' is not installed. Generating script to install it...

Using intermediate directory '/tmp/8ddbd43eec68bfd'.

Copying files to the intermediate directory...
Done in 0 sec(s).

Source directory     : /tmp/8ddbd43eec68bfd
Destination directory: /home/site/wwwroot


Downloading and extracting 'python' version '3.11.12' to '/tmp/oryx/platforms/python/3.11.12'...
Detected image debian flavor: bullseye.
Skipping download of python version 3.11.12 as it is available in external sdk provider cache...
Extracting contents...
Successfully extracted python version 3.11.12 from external sdk provider cache...
Done in 6 sec(s).

image detector file exists, platform is python..
OS detector file exists, OS is bullseye..
Executing pre-build command...
/tmp/BuildScriptGenerator/ad3d7f27e98c4729936217c85673d61a/build.sh: line 204: Mon: command not found
/tmp/BuildScriptGenerator/ad3d7f27e98c4729936217c85673d61a/build.sh: line 204: Mon: command not found\n/bin/bash -c "oryx build /tmp/zipdeploy/extracted -o /home/site/wwwroot --platform python --platform-version 3.11 -p virtualenv_name=antenv --log-file /tmp/build-debug.log  -i /tmp/8ddbd43eec68bfd --compress-destination-dir | tee /tmp/oryx-build.log ; exit $PIPESTATUS "

Generating summary of Oryx build
Parsing the build logs
Found 0 issue(s)

Build Summary :
===============
Errors (0)
Warnings (0)

Deployment Failed. deployer = VSTS_ZIP_DEPLOY deploymentPath = ZipDeploy. Extract zip.
##[error]Failed to deploy web package to App Service.
##[warning]Can't find loc string for key: KuduStackTraceURL
##[error]KuduStackTraceURL https://$<CENSORED>/api/vfs/LogFiles/kudu/trace
##[error]Error: Package deployment using ZIP Deploy failed. Refer logs for more details.
Successfully updated deployment History at https://<CENSORED>/api/deployments/3688331751885376796
App Service Application URL: <CENSORED>
Finishing: Deploy Azure Web App : <CENSORED>

Bugged line 204 in generated build script contains following code:

`date` >> build-date.txt

But it should be:

echo `date` >> build-date.txt

Below is Azure Pipeline YAML that I use:

# Python to Linux Web App on Azure
# Build your Python project and deploy it to Azure as a Linux Web App.
# Change python version to one thats appropriate for your application.
# https://docs.microsoft.com/azure/devops/pipelines/languages/python

trigger:
  - main

parameters:
  - name: slot
    displayName: Slot
    type: string
    default: production
    values:
      - production
      - slot

variables:
  azureServiceConnectionName: "<CENSORED>"
  webAppName: "<CENSORED>"
  environmentName: "<CENSORED>"
  projectRoot: $(System.DefaultWorkingDirectory)
  pythonVersion: "3.11"

stages:
  - stage: Build
    displayName: Build stage
    jobs:
      - job: BuildJob
        pool:
          vmImage: ubuntu-22.04
        steps:
          - task: UsePythonVersion@0
            inputs:
              versionSpec: "$(pythonVersion)"
            displayName: "Use Python $(pythonVersion)"
          - task: ArchiveFiles@2
            displayName: "Archive files"
            inputs:
              rootFolderOrFile: "$(projectRoot)"
              includeRootFolder: false
              archiveType: zip
              archiveFile: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
              replaceExistingArchive: true
          - publish: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
            displayName: "Publish package"
            artifact: drop

  - stage: Deploy
    displayName: "Deploy Web App"
    dependsOn: Build
    condition: succeeded()
    jobs:
      - deployment: DeploymentJob
        pool:
          name: TCI-OnPrem-Win
        environment: $(environmentName)
        strategy:
          runOnce:
            deploy:
              steps:
                - task: AzureWebApp@1
                  displayName: "Deploy Azure Web App : $(webAppName)"
                  inputs:
                    azureSubscription: $(azureServiceConnectionName)
                    appType: "webAppLinux"
                    appName: $(webAppName)
                    package: $(Pipeline.Workspace)/drop/$(Build.BuildId).zip
                    slotName: ${{ parameters.slot }}
                    runtimeStack: "PYTHON|3.11"
                    # There seems to be a problem with using startup scripts (startup.sh)
                    # and the windows agent used to deploy the application.
                    # The agent messes up the line terminators of the script, making it unusable
                    startUpCommand: "apt-get update && apt-get install -y git && gunicorn"

Kudu version:

Kudu Version : 20250623.5
Commit       : 353543ec4c45fcbfd4750522d32c94e23b31927a

Could you fix that please as this prevents me & my project team from conducting critical production deployments? Thank you!