Asp.net core docker：MSBUILD：错误MSB1009：项目文件不存在

Question

我阅读了一些关于如何为 asp.net 核心项目设置 docker 文件的文档。 我有一个名为 dsi.rest.app 的 rest api，我尝试创建一个 dockerfile。

我按照教程在 dsi.rest.app 文件夹中创建了一个 Dockerfile。以下文件夹包含我想要 dockerise 的解决方案。

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /DockerSource

# Copy csproj and restore as distinct layers
COPY *.sln .
COPY *.csproj ./
RUN dotnet restore

# Copy everything else and build website
COPY /. ./
WORKDIR /DockerSource/dsi.rest.app
# RUN dotnet publish -c release -o /DockerOutput/dsi.rest.app --no-restore
RUN dotnet build "dsi.rest.app.csproj" -c Release -o /DockerOutput/dsi.rest.app --no-restore

# Final stage / image
FROM mcr.microsoft.com/dotnet/aspnet:5.0
WORKDIR /DockerOutput/dsi.rest.app
COPY --from=build /DockerOutput/dsi.rest.app ./
ENTRYPOINT ["dotnet", "dsi.rest.app.dll"]

我尝试构建图像：

docker build --pull -t dsi.rest.rest .

我收到一条错误消息：

 => ERROR [build 8/8] RUN dotnet build "dsi.rest.app.csproj" -c Release -o /DockerOutput/dsi.rest.app --no-restore                    0.5s
#15 0.505 MSBUILD : error MSB1009: Project file does not exist.
#15 0.505 Switch: dsi.rest.app.csproj

项目文件与 dockerfile 位于同一级别。 csproj 文件与 Dockerfile 位于同一文件夹级别。

我的 csproj 文件包含以下信息：

<Project Sdk="Microsoft.NET.Sdk.Web">

    <PropertyGroup>
        <TargetFramework>net5.0</TargetFramework>
        <UserSecretsId>4b7e5335-798e-4066-a795-83e772338899</UserSecretsId>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="5.0.0" />
        <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="3.2.4" />
        <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.10.13" />
        <PackageReference Include="MsgReader" Version="3.12.4" />
        <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
        <PackageReference Include="Swashbuckle.AspNetCore" Version="6.1.1" />
    </ItemGroup>

    <ItemGroup>
      <Folder Include="Properties\PublishProfiles\" />
    </ItemGroup>

</Project>

我运行了命令： dotnet build "dsi.rest.app.csproj" -c Release -o /DockerOutput/dsi.rest.app --no-restore 没有任何问题。它确实在 C:/DockerOutput/dsi.rest.app 中生成了我的应用程序

Answer 1

我终于重写了我的 Dockerfile：

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS base
WORKDIR /appSource
EXPOSE 5000
EXPOSE 44325

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /appBuild
# Copy csproj and restore as distinct layers
COPY *.sln .
COPY *.csproj .

RUN mkdir /tmp/build/
COPY . /tmp/build
RUN find /tmp/build -name *.csproj

RUN dotnet restore dsi.quieto.rest.csproj --verbosity detailed
# Copy everything else and build
COPY . .
WORKDIR /appBuild/dsi.quieto.rest
RUN dotnet build "../dsi.quieto.rest.csproj" -c Release -o /appSource --no-restore

FROM build AS publish
WORKDIR /appBuild/dsi.quieto.rest
RUN dotnet publish "../dsi.quieto.rest.csproj" -c Release -o /appSource


FROM base AS final
WORKDIR /appSource
COPY --from=publish /appSource .
ENTRYPOINT ["dotnet", "dsi.quieto.rest.dll"]

我可以构建一个映像并运行它。 不幸的是，网络服务不可用。所以我重写了我的 Dockerfile。这是一个很好的解决方案：

FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
WORKDIR /source

# copy csproj and restore as distinct layers
COPY *.sln .
COPY *.csproj ./
RUN dotnet restore

# copy everything else and build app
COPY /. ./
WORKDIR /source
RUN dotnet publish -c release -o /app --no-restore

# final stage/image
FROM mcr.microsoft.com/dotnet/aspnet:5.0
WORKDIR /app
COPY --from=build /app ./
ENTRYPOINT ["dotnet", "app.rest.dll"]

解决方案来自这里：https://github.com/dotnet/dotnet-docker/tree/main/samples/aspnetapp