Unable to load the service index for source error for a CodeArtifact NuGet feed using Dockerfile

Question

Hi! We’re using AWS CodeArtifact for storing our packages and when we try to build a Docker image from our Dockerfile it fails because it's unable to load the source during the restore process.

We have a web API in .Net that we want to deploy using AWS Fargate. This project runs smoothly from Visual Studio 2022 using Docker but we can’t build the image from PowerShell after adding our packages from CodeArtifact.

Our approach to include the credentials in the build is to pass the NuGet.Config stored on the host using Buildkit.

This’s our Dockerfile:

```powershell
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.

FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
WORKDIR /app
EXPOSE 80
ENV ASPNETCORE_URLS=http://+:49151

FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
WORKDIR /src 
COPY . .

WORKDIR /src
COPY ["Src/Presentation/Project.API/Project.API.csproj", "Src/Presentation/Project.API/"]
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
	--mount=type=secret,id=nugetconfig \
	dotnet restore "Src/Presentation/Project.API/Project.API.csproj" \
	--configfile /run/secrets/nugetconfig

COPY . .
WORKDIR "/src/Src/Presentation/Project.API"
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
	dotnet build "Project.API.csproj" -c Release -o /app/build \
	--no-restore

FROM build AS publish
RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \
	dotnet publish "Project.API.csproj" -c Release -o /app/publish \
	--no-restore

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Project.API.dll"]
```
Our script in PowerShell:

```powershell
docker buildx build --secret id=nugetconfig,src=$HOME\AppData\Roaming\NuGet\NuGet.Config -f "Src\Presentation\Project.API\Dockerfile" -t my-dotnet-image .
```

Output:

```powershell
#14 [build 6/9] RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages 	--mount=type=secret,id=nugetconfig 	dotnet restore "Src/Presentation/Project.API/Project.API.csproj" 	
--configfile /run/secrets/nugetconfig
#14 1.175   Determining projects to restore...
#14 2.504 /src/Src/Presentation/Project.API/Project.API.csproj : error NU1301: Unable to load the service index for source 
https://domain-123456789012.d.codeartifact.us-east-2.amazonaws.com/nuget/repository/v3/index.json.
```

What are we missing here? Once we have the Dockerfile working we want to use CDK for deploying the Docker image alongside our infrastructure.

We’re using **aws codeartifact login**  command to authenticate with the service.

Thanks!

Answer

Did you ever get an answer to this? I'm having the same issue. Thanks

Answer

Having this same issue -- did anyone find a solution?

Answer

Try to update a source credentials for **sourceName**

nuget.config

```

dotnet nuget update source **sourceName**

Dockerfile
```
FROM mcr.microsoft.com/dotnet/sdk:6.0
WORKDIR /app
COPY ./app .
COPY ./.aws /root/.aws
RUN apt-get update; apt-get install -y  python3-pip curl unzip

RUN curl https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip -o awscliv2.zip \
  && unzip awscliv2.zip \
  && ./aws/install \
  && rm -rf aws awscliv2.zip
  
RUN \    
    CODEARTIFACT_AUTH_TOKEN=`aws codeartifact get-authorization-token --domain mydomain --domain-owner 01005003 --region eu-west-1 --query authorizationToken --output text --profile default` 	 && \
    dotnet nuget update source sourceName -s "https://mydomain-01005003.d.codeartifact.eu-west-1.amazonaws.com/nuget/nugets/v3/index.json"  -u "aws" -p "${CODEARTIFACT_AUTH_TOKEN}" --store-password-in-clear-text --configfile "nuget.config"

RUN \ 
	  dotnet publish

```

Unable to load the service index for source error for a CodeArtifact NuGet feed using Dockerfile

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