.net - Docketfile - 单元测试不适用于多个构建目标

Question

我有以下 docker 文件，它有多个构建目标，包括 .net 单元测试。

出于某种原因，它在构建过程中没有达到单元测试，但是如果我评论 testrunner 并测试构建目标点，它就可以工作。

任何的想法？

我的文件夹结构：

#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/core/runtime:3.1 AS base
WORKDIR /app

FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build

WORKDIR /src
COPY *.sln .
COPY ["Pokemon.API/*.csproj", "./Pokemon.API/"]
COPY ["Pokemon.Core/*.csproj", "./Pokemon.Core/"]
COPY ["Pokemon.Models/*.csproj", "./Pokemon.Models/"]
COPY ["Pokemon.Test/*.csproj", "./Pokemon.Test/"]

RUN dotnet restore

# copy full solution over
COPY . .
RUN dotnet build

# create a new build target called testrunner
FROM build AS testrunner
WORKDIR /src/Pokemon.Test
CMD ["dotnet", "test", "--logger:trx"]

# run the unit tests
FROM build AS test
WORKDIR /src/Pokemon.Test
RUN dotnet test --logger:trx

FROM build AS release
WORKDIR "/src/Pokemon.API"
RUN dotnet build "Pokemon.API.csproj" -c Release -o /app/build

FROM build AS publish
WORKDIR "/src/Pokemon.API"
RUN dotnet publish "Pokemon.API.csproj" -c Release -o /app/publish

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

结果输出：

如果我在 Docker 文件的下面一行注释，它会在构建期间成功运行单元测试

# create a new build target called testrunner
#FROM build AS testrunner
#WORKDIR /src/Pokemon.Test
#CMD ["dotnet", "test", "--logger:trx"]

# run the unit tests
#FROM build AS test
#WORKDIR /src/Pokemon.Test
RUN dotnet test --logger:trx

标签： .netdockerdockerfilecontainers.net-core-3.1

Answer 1

执行时没有指定目标构建阶段docker build。因此，默认情况下，它以要构建的最后阶段为目标。但是最后阶段不依赖于 testrunner 或测试阶段，因此它们都不会被构建。如果要显式运行其中一个测试阶段，可以指定--target选项以针对特定阶段。例如：docker build -t pokemonapi:v1 -f Dockerfile --target test .