Unauthorized: authentication required

Docker Desktop for Windows
1

Since a couple of days, I am trying to build a docker file but always getting unauthorized: authentication required.

Here is the contents of the Dockerfile:

FROM microsoft/aspnet

# Download and extract BlogEngine.NET project files

RUN powershell -Command
$ErrorActionPreference = ‘Stop’;
Invoke-WebRequest -Method Get -Uri https://blogengine.codeplex.com/downloads/get/1566660 -OutFile c:\BlogEngineNETSrc.zip ;
Expand-Archive -Path c:\BlogEngineNETSrc.zip -DestinationPath c:\inetpub\wwwroot\blogengine ;
Remove-Item c:\BlogEngineNETSrc.zip -Force

Configure Web App

COPY buildapp.ps1 C:/
RUN powershell.exe C:\buildapp.ps1

#FIX DNS issues currently in Windows Containers
RUN powershell set-itemproperty -path ‘HKLM:\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters’ -Name ServerPriorityTimeLimit -Value 0 -Type DWord

Overwrite Web.config file so that web service points to db service

COPY Web.config C:/inetpub/wwwroot/blogengine
EXPOSE 81

Download starts, some completes then I see

Sending build context to Docker daemon 24.06kB
Step 1/7 : FROM microsoft/aspnet
latest: Pulling from microsoft/aspnet
3889bb8d808b: Downloading [=====> ] 431.2MB/4.07GB
449343c9d7e2: Downloading [================> ] 431.2MB/1.304GB
ccd8f322a2de: Download complete
5358f1f8c04f: Download complete
27fb1950158d: Download complete
4447c3ffe068: Download complete
94eeeaf0d3bd: Download complete
fe1d276c8d64: Downloading
25871a4250c9: Waiting
b53cc298d0b7: Waiting
unauthorized: authentication required

My docker for windows is
Client:
Version: 17.12.0-ce
API version: 1.35
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:05:22 2017
OS/Arch: windows/amd64

Server:
Engine:
Version: 17.12.0-ce
API version: 1.35 (minimum version 1.24)
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:15:52 2017
OS/Arch: windows/amd64
Experimental: false

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2

In fact, it seems that "Docker for Windows " was corrupt, maybe because of the different upgrades since 2 years. I removed it completely and re-installed it, in Windows containers mode everything works fine but not Linux containers mode. It crashes. I opened a thread at https://github.com/docker/for-win/issues/1589#issuecomment-359322046
since 3 days but no response yet from the team

3

For some reason, your docker daemon tries to authenticate yourself to docker hub. This happens only with a layer of the docker image.

This is an old discussion but, I’ve encountered an issue like this and I’ve solved logging out from docker windows application.