.net core dockerfile in a start-up project, build the mirror can't find the reference of other-CodePudding

I have a question want to ask next, there are multiple projects, under the one solution (Test. The Core project, the Test. The Core project, WebApi project),
Dockerfile on the inside of the startup project WebApi,
When I build mirror tip can't find the corresponding other project

 
The FROM Microsoft/aspnetcore: 2.0 AS base 
WORKDIR/app 
EXPOSE 80 

The FROM Microsoft/aspnetcore - build: 2.0 AS the build 
WORKDIR/SRC 
COPY [" Test. WebApi. Csproj ", "Test. WebApi/"] 
The RUN dotnet restore "Test. WebApi/Test. The WebApi. Csproj" 
COPY. 
WORKDIR "/SRC" 
The RUN dotnet build "Test. WebApi. Csproj" - c Release - o/app 

FROM the build AS the publish 
RUN dotnet publish "Test. WebApi. Csproj" - c Release - o/app 

FROM the base AS final 
WORKDIR/app 
COPY -- from=publish/app. 
ENTRYPOINT [" dotnet ", "Test. WebApi. DLL"]