How to create docker image with Azure Artifacts feed in .Net core project

Question

I have got a problem while creating docker image on my .Net core web api application. Thats the docker image generated by VS docker support:

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2-stretch-slim AS base
WORKDIR /app
EXPOSE 80

FROM mcr.microsoft.com/dotnet/core/sdk:2.2-stretch AS build
WORKDIR /src
COPY ["src/appname.Api/appname.Api.csproj", "src/appname.Api/"]
COPY ["src/appname.Data/appname.Data.csproj", "src/appname.Data/"]
COPY ["src/Eappname.Models/appname.Models.csproj", "src/appname.Models/"]
RUN dotnet restore "src/appname.Api/appname.Api.csproj"
COPY . .
WORKDIR "/src/src/appname.Api"
RUN dotnet build "appname.Api.csproj" -c Release -o /app

FROM build AS publish
RUN dotnet publish "appname.Api.csproj" -c Release -o /app

FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "appname.Api.dll"]

Unfortunettly I use Azure Artifacts Feed package inside my app and this image does not work. I made a little research and try to use credential provider with nuget config file. Just like below:

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2-stretch-slim AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

FROM mcr.microsoft.com/dotnet/core/sdk:2.2-stretch AS build
WORKDIR /src

COPY NuGet.Config ./
COPY ["src/appname.Api/appname.Api.csproj", "src/appname.Api/"]
COPY ["src/appname.Data/appname.Data.csproj", "src/appname.Data/"]
COPY ["src/appname.Models/appname.Models.csproj", "src/appname.Models/"]

RUN dotnet restore --configfile NuGet.Config "src/appname.Api/appname.Api.csproj"

COPY . .
WORKDIR "/src/src/appname.Api"
RUN dotnet build "appname.Api.csproj" -c Release -o /app

FROM build AS publish
RUN dotnet publish "appname.Api.csproj" -c Release -o /app
FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "appname.Api.dll"]

and also added Nuget.Config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="BredasVSTS" value="https://pkgs.dev.azure.com/feed/nuget/v3/index.json" />
  </packageSources>
  <packageSourceCredentials>
    <BredasVSTS>
      <add key="Username" value="<usernameWithEmail>" />      
      <add key="ClearTextPassword" value="<token>" />
    </BredasVSTS>
  </packageSourceCredentials>
</configuration>

Now I made a little progress because I am able to pass step 11 - dotnet restore. Unfortunettly in step 14- dotnet build I get the following error: /bin/sh: 2: cd: can't cd to *Undefined*

Any ideas how can I solve this problem?

Answer 1

error: /bin/sh: 2: cd: can't cd to Undefined

According to the error MSB3073: The command "cd "undefined"", it seems you are using the command line or build event cd $(SolutionDir) in your xxx.Api project.

When you build the project file .csproj without solution file .sln with dockerfile, it could not get the value of $(SolutionDir), which is based on the .sln file.

So, you will get the error "cd "undefined", to resolve this issue you can try to replace all $(SolutionDir) with $(ProjectDir)..\ in your project file.

As test, I create a sample with build event:

CD $(SolutionDir)

Then I got the same error:

To resolve this issue, I have replaced $(SolutionDir) with $(ProjectDir)..\, then build it, it works fine:

Check the this thread for some more details.

Hope this helps.