How to fix 'Docker command failed with exit code 125' when using visual studio

Question

I am using visual studio 2019 to build .NET CORE web api. When i build the application with docker via VS2019, i am getting the error: "Docker command failed with exit code 125".

Any idea what is the cause? This is the Output:

1>d2c0ee48dbf44507b3dee44a17ab8b8186fe4ec59c283af834191e8f3c902f1a
1>C:\Users\97254\.nuget\packages\microsoft.visualstudio.azure.containers.tools.targets\1.9.5\build\Container.targets(196,5): error CTC1015: Docker command failed with exit code 125.
1>C:\Users\97254\.nuget\packages\microsoft.visualstudio.azure.containers.tools.targets\1.9.5\build\Container.targets(196,5): error CTC1015: docker: Error response from daemon: hcsshim::CreateComputeSystem d2c0ee48dbf44507b3dee44a17ab8b8186fe4ec59c283af834191e8f3c902f1a: The request is not supported.
1>C:\Users\97254\.nuget\packages\microsoft.visualstudio.azure.containers.tools.targets\1.9.5\build\Container.targets(196,5): error CTC1015: (extra info: {"SystemType":"Container","Name":"d2c0ee48dbf44507b3dee44a17ab8b8186fe4ec59c283af834191e8f3c902f1a","Owner":"docker","IgnoreFlushesDuringBoot":true,"LayerFolderPath":"C:\\ProgramData\\Docker\\windowsfilter\\d2c0ee48dbf44507b3dee44a17ab8b8186fe4ec59c283af834191e8f3c902f1a","Layers":[{"ID":"51d2ce01-5190-5398-8d36-73a41302a60e","Path":"C:\\ProgramData\\Docker\\windowsfilter\\47c9023ce74aa96d2e5002cdf0f7e354f5de55b217e08498dda14e1be5d6998f"},{"ID":"c6ab7d12-aab5-5873-9f2e-0ec11613a58d","Path":"C:\\ProgramData\\Docker\\windowsfilter\\035fac58f721cc9c158ef24fdb84a7e74eb4eea2cf29421a3744241cc62eabe7"},{"ID":"cdf32ccb-53d2-56ad-8b1d-9dfa6ae076d7","Path":"C:\\ProgramData\\Docker\\windowsfilter\\7ac67c0c7c4a6dfc2c0becbc948078b48873f003c49f16c1d0be0d69b179d3b3"},{"ID":"4c8a0736-dba8-5fde-8cc0-56aa33e0149d","Path":"C:\\ProgramData\\Docker\\windowsfilter\\43ad281ee856dabf07411276e5774b386bd37aee8b3099c3b7faa1d314a7013e"},{"ID":"af791769-1fd1-5170-b6e4-2245156a8f6f","Path":"C:\\ProgramData\\Docker\\windowsfilter\\878625f6c364e37ff07532212a6979f096de46d9eb455c964366ecd5a9c03ba9"},{"ID":"082795f2-b562-5088-a34f-91d16d7e5c36","Path":"C:\\ProgramData\\Docker\\windowsfilter\\4dbda25002ed56956709c11b4cc902083e712fc8a862b2b62970e839ec2bffec"},{"ID":"e409f795-d9cf-539a-ac95-dbedc3506ccb","Path":"C:\\ProgramData\\Docker\\windowsfilter\\7e2f83b59544b3cf2e553cdd9d94dd27a4684360c23f44d93a2b39e5dd0301cb"},{"ID":"a5fdd7a2-0ea0-553a-9c1e-976a729321e3","Path":"C:\\ProgramData\\Docker\\windowsfilter\\27f0f73d07810d0877a35fc1215e5336e6034eba1c08974f2f308796c9a32890"},{"ID":"b0175521-e8e7-55e8-97a8-77d96d2bb78a","Path":"C:\\ProgramData\\Docker\\windowsfilter\\03bb0041548802485ca5cc3a0475fde8905f048e50eb6b43413b1796b34773ad"},{"ID":"85e06fce-32e5-5cb6-8678-a4750186c146","Path":"C:\\ProgramData\\Docker\\windowsfilter\\8f5d06ad16da8edecc28898e8cda1ce15e4087e16e1b9a5d2d7a4d10a2c55398"}],"HostName":"d2c0ee48dbf4","MappedDirectories":[{"HostPath":"c:\\users\\97254\\onecoremsvsmon\\16.3.0039.0","ContainerPath":"c:\\remote_debugger","ReadOnly":true,"BandwidthMaximum":0,"IOPSMaximum":0,"CreateInUtilityVM":false},{"HostPath":"c:\\cheggtest\\qfetcherapi","ContainerPath":"c:\\app","ReadOnly":false,"BandwidthMaximum":0,"IOPSMaximum":0,"CreateInUtilityVM":false},{"HostPath":"c:\\cheggtest","ContainerPath":"c:\\src","ReadOnly":false,"BandwidthMaximum":0,"IOPSMaximum":0,"CreateInUtilityVM":false},{"HostPath":"c:\\users\\97254\\.nuget\\packages","ContainerPath":"c:\\.nuget\\fallbackpackages2","ReadOnly":false,"BandwidthMaximum":0,"IOPSMaximum":0,"CreateInUtilityVM":false},{"HostPath":"c:\\program files\\dotnet\\sdk\\nugetfallbackfolder","ContainerPath":"c:\\.nuget\\fallbackpackages","ReadOnly":false,"BandwidthMaximum":0,"IOPSMaximum":0,"CreateInUtilityVM":false}],"HvPartition":true,"EndpointList":["766EA888-2541-4D88-B330-EBD3ECA2FF64"],"HvRuntime":{"ImagePath":"C:\\ProgramData\\Docker\\windowsfilter\\8f5d06ad16da8edecc28898e8cda1ce15e4087e16e1b9a5d2d7a4d10a2c55398\\UtilityVM"},"AllowUnqualifiedDNSQuery":true}).

Answer 1

I got this same error when using Windows containers. However, I switched to Linux containers, and it told me I had to enable volume sharing. Once that was enabled the sample instructions worked perfectly.

One reason I suspect that Windows containers are not working right now is that in build 1809 of nanoserver the USERNAME was switched from ContainerAdministrator to ContainerUser which has no permissions to write to the root of C: in the docker.

I now have a workaround to enable you to solve the issue you are having while trying to run this sample app using Windows containers.

As Visual Studio 2019 creates your docker file for you when you add docker support (windows), the dockerfile starts off at the top looking like this:

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-nanoserver-1809 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

Change this to the following:

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-nanoserver-1809 AS base
USER ContainerAdministrator
RUN net localgroup administrators /add "User Manager\ContainerUser"
USER ContainerUser
WORKDIR /app
EXPOSE 80
EXPOSE 443

Note that the 3 lines that I added essentially elevate ContainerUser to admin.

Open a powershell command prompt and do this:

docker rmi projname:dev

where projname is the name of your project. This will cause Visual Studio to rebuild from your edited dockerfile.

Under pages shared _Layout.cshtml you can set a breakpoint on the line for @RenderBody(). Set that breakpoint, and press F5 to run with debugging.

You should see the docker rebuild and run successfully, open your browser, and break on that line. Press F5 again to allow the page to render in the browser.

Let me know if this works for you.

Answer 2

For me, that exception came along with the following message:

Error response from daemon: user declined directory sharing C:\Repos\...\src\WorkforceManagementAPI.WEB.

I downloaded the latest version of Docker Desktop, which has an explicit list of File Sharing paths (Settings/Resources/File Sharing/add the path: C:\Repos...\src\WorkforceManagementAPI.WEB)

That resolved the issue.