Website pages fail to load with message "The CodeDom provider type ... could not be located."

[seth-capistron]

In my Dockerfile, I have...

FROM microsoft/aspnet:4.7.2-windowsservercore-1803

For my ASP.NET project, I have installed the following Nuget package...

<package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.0" targetFramework="net462" />

Which has added this to my web.config...

  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
    </compilers>
  </system.codedom>

When I build and run the container, hitting my website I get the following error...

The CodeDom provider type "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could not be located.

However, if I look inside of my C:\inetpub\wwwoot directory, I can clearly see that the CodeDom dll is there...

Directory: C:\inetpub\wwwroot
Mode LastWriteTime Length Name
-a---- 5/24/2018 1:38 PM 40080 Microsoft.CodeDom.Providers.DotNetCompilerPlatform.dll
-a---- 5/24/2018 1:38 PM 1805 Microsoft.CodeDom.Providers.DotNetCompilerPlatform.xml

What am I missing? Any idea why IIS can't find the CodeDom file?

[Jinhuafei]

Is Microsoft.CodeDom.Providers.DotNetCompilerPlatform.dll under bin folder?

[Jinhuafei]

Since we don't have enough info about the issue, close for now. Feel free to reactivate the issue later with some details.

[martinssavickis]

Look like you might have done something similar to what I did

COPY ./DockerApp/* ./

Which copied all the files without directory structure

[SubratoPati]

Facing the same issue

[dcolclazier]

Also periodically facing the same issue.