Dockerfile can't see local file or private nuget server

Question

I am trying to start my .net core web api on container tech. using docker.

Environments=Windows 10,Visual Studio

Docker version:

Clien

Answer 1

Stumbled across this while looking for another nuget question/answer...

To restore from within docker, as mentioned in this answer copy a nuget.config file to the container first, I'd suggest you place this in /root/.nuget/NuGet folder and use a multistage Dockerfile, that way, you don't need to worry about removing it.

If it helps, this is my setup...

--nuget.config


  
    
  
  
    
      
      
    
  

Multi-stage Dockerfile...

FROM mcr.microsoft.com/dotnet/core/sdk:3.1.201 as sdk-build
WORKDIR /app

# Skip extraction of XML documentation for nuget packages
ENV NUGET_XMLDOC_MODE=skip

# We'll copy the nuget config file to the right place
# which should mean it doesn't get copied to our deployed containers
# and we can just call 'dotnet restore' with specifying a config file
COPY ./Nuget.Config /root/.nuget/NuGet/NuGet.Config

# Make use of cached layers, by only doing a restore when the config changes
COPY ./*.sln ./**/*.csproj ./

# Then within a RUN command to copy them to the right folders.
RUN for file in $(ls *.csproj); do mkdir -p ${file%.*}/ && mv $file ${file%.*}/; done \
    && dotnet restore

# Copy the source code
COPY . .

# Now do a build/publish here
RUN dotnet publish "./project/project.csproj" --output /app/output


FROM mcr.microsoft.com/dotnet/core/aspnet:3.1.2
WORKDIR /app
COPY --from=sdk-build /app/output ./
ENTRYPOINT ["./project"]