根据您的描述，您可以创建自己的.deployment和deploy.cmd文件，首先将第二个和第三个github存储库公共库克隆到web应用文件夹，然后使用msbuild命令进行构建。
注意：您不能将第二个和第三个github存储库克隆到artifact目录。因为，您有3个独立的github存储库，每个存储库都有自己的.git文件。我们不能把这三个结合起来。因此，我建议您首先将第二个和第三个存储库克隆到新文件夹中，然后使用msbuild来构建它。
具体操作步骤如下：
首先，我建议您可以从kudu控制台下载部署脚本。
notice:after you 已经从git部署了，可以下载这个文件。我们以这个文件为例添加代码。如果没有，可以按照my deployment.cmd。记住更改项目名称。
具体如下：
打开Kudu。

下载部署脚本。

然后，您可以更改它是否包含.deployment和deploy.cmd文件。
将下面的代码添加到deploy.cmd文件中，并将这两个文件添加到git文件夹中进行推送。

git clone https://github.com/{yourgithubname}/BrandoGitTestLibrary.git D:\home\site\{foldername}

  echo  second project
  :: 1. Start restore second project
  dotnet restore "D:\home\site\{foldername}\BrandoGitTestLibrary\BrandoGitTestLibrary.csproj"

  :: 2. Build to DEPLOYMENT_TEMP wait copy
  dotnet build  "D:\home\site\{foldername}\BrandoGitTestLibrary\BrandoGitTestLibrary.csproj" --output "%DEPLOYMENT_TEMP%"

此代码用于构建公共库以等待复制。
在主网站发布后，它会将tempfolder复制到wwwrot。
deploy.cmd文件的总数。
注意：这个示例只构建了两个存储库。如果您想构建和发布3个存储库，只需添加代码以再次克隆。

git clone https://github.com/BrandoTest/BrandoGitTestLibrary.git D:\home\site\sencondproject

    echo  second project
    :: 3. Start restore second project
    dotnet restore "D:\home\site\sencondproject\BrandoGitTestLibrary\BrandoGitTestLibrary.csproj"

    :: 4. Build and publish
    dotnet build  "D:\home\site\sencondproject\BrandoGitTestLibrary\BrandoGitTestLibrary.csproj" --output "%DEPLOYMENT_TEMP%"

@if "%SCM_TRACE_LEVEL%" NEQ "4" @echo off

:: ----------------------
:: KUDU Deployment Script
:: Version: 1.0.15
:: ----------------------

:: Prerequisites
:: -------------

:: Verify node.js installed
where node 2>nul >nul
IF %ERRORLEVEL% NEQ 0 (
  echo Missing node.js executable, please install node.js, if already installed make sure it can be reached from current environment.
  goto error
)

:: Setup
:: -----

setlocal enabledelayedexpansion

SET ARTIFACTS=%~dp0%..\artifacts

IF NOT DEFINED DEPLOYMENT_SOURCE (
  SET DEPLOYMENT_SOURCE=%~dp0%.
)

IF NOT DEFINED DEPLOYMENT_TARGET (
  SET DEPLOYMENT_TARGET=%ARTIFACTS%\wwwroot
)

IF NOT DEFINED NEXT_MANIFEST_PATH (
  SET NEXT_MANIFEST_PATH=%ARTIFACTS%\manifest

  IF NOT DEFINED PREVIOUS_MANIFEST_PATH (
    SET PREVIOUS_MANIFEST_PATH=%ARTIFACTS%\manifest
  )
)

IF NOT DEFINED KUDU_SYNC_CMD (
  :: Install kudu sync
  echo Installing Kudu Sync
  call npm install kudusync -g --silent
  IF !ERRORLEVEL! NEQ 0 goto error

  :: Locally just running "kuduSync" would also work
  SET KUDU_SYNC_CMD=%appdata%\npm\kuduSync.cmd
)
IF NOT DEFINED DEPLOYMENT_TEMP (
  SET DEPLOYMENT_TEMP=%temp%\___deployTemp%random%
  SET CLEAN_LOCAL_DEPLOYMENT_TEMP=true
)

IF DEFINED CLEAN_LOCAL_DEPLOYMENT_TEMP (
  IF EXIST "%DEPLOYMENT_TEMP%" rd /s /q "%DEPLOYMENT_TEMP%"
  mkdir "%DEPLOYMENT_TEMP%"
)

IF DEFINED MSBUILD_PATH goto MsbuildPathDefined
SET MSBUILD_PATH=%ProgramFiles(x86)%\MSBuild\14.0\Bin\MSBuild.exe
:MsbuildPathDefined
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Deployment
:: ----------

echo Handling ASP.NET Core Web Application deployment.

:: 1. Restore nuget packages
call :ExecuteCmd dotnet restore "%DEPLOYMENT_SOURCE%\TestForCore2.csproj"
IF !ERRORLEVEL! NEQ 0 goto error

:: 2. Build and publish
call :ExecuteCmd dotnet publish "%DEPLOYMENT_SOURCE%\TestForCore2.csproj" --output "%DEPLOYMENT_TEMP%" --configuration Release
IF !ERRORLEVEL! NEQ 0 goto error

:: 5. KuduSync
call :ExecuteCmd "%KUDU_SYNC_CMD%" -v 50 -f "%DEPLOYMENT_TEMP%" -t "%DEPLOYMENT_TARGET%" -n "%NEXT_MANIFEST_PATH%" -p "%PREVIOUS_MANIFEST_PATH%" -i ".git;.hg;.deployment;deploy.cmd"
IF !ERRORLEVEL! NEQ 0 goto error

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
goto end

:: Execute command routine that will echo out when error
:ExecuteCmd
setlocal
set _CMD_=%*
call %_CMD_%
if "%ERRORLEVEL%" NEQ "0" echo Failed exitCode=%ERRORLEVEL%, command=%_CMD_%
exit /b %ERRORLEVEL%

:error
endlocal
echo An error has occurred during web site deployment.
call :exitSetErrorLevel
call :exitFromFunction 2>nul

:exitSetErrorLevel
exit /b 1

:exitFromFunction
()

:end
endlocal
echo Finished successfully.

结果：