为 .net 核心应用程序创建 Dockerfile 的问题

Question

我是 docker 新手，所以我想寻求帮助，为 .net 核心应用程序创建 Dockerfile。 该应用程序具有以下架构：

   FarmHouse.Services.AuthenticationService
    │   ├───FarmHouse.Services.AuthenticationService.Api
    │   ├───FarmHouse.Services.AuthenticationService.Logic
    │   └───Dockerfile
    │ 
    ├───FarmHouse.Services.Common
    │   └───FarmHouse.Services.Common.Models
    │   
    └───FarmHouse.Services.EmailService
        ├───FarmHouse.Services.EmailService.Api
        ├───FarmHouse.Services.EmailService.Logic
        └───Dockerfile

这三个项目（FarmHouse.Services.EmailService、FarmHouse.Services.Common 和 FarmHouse.Services.AuthenticationService）在同一个解决方案中，FarmHouse.Services.AuthenticationService 使用来自 Common 项目的对象，即 FarmHouse.Services.Common 是它的依赖项。

我希望其他服务也可以链接到 Common。我的 AuthenticationService 的 Dockerfile 如下所示：

FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build-env
WORKDIR /app

# Copy csproj and restore as distinct layers
COPY ./*.sln .
COPY ./FarmHouse.Services.AuthenticationService/FarmHouse.Services.AuthenticationService.Logic/FarmHouse.Services.AuthenticationService.Logic.csproj ./FarmHouse.Services.AuthenticationService.Logic/FarmHouse.Services.AuthenticationService.Logic.csproj
COPY ./FarmHouse.Services.AuthenticationService/FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj ./FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj
COPY ./FarmHouse.Services.Common/FarmHouse.Services.Common.Models/FarmHouse.Services.Common.Models.csproj ./FarmHouse.Services.Common.Models/FarmHouse.Services.Common.Models.csproj

RUN dotnet restore

# Copy everything else and build
COPY ./ ./
RUN dotnet publish -c Release -o out

# Build runtime image
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1
WORKDIR /app
COPY --from=build-env /app/out .
ENTRYPOINT ["dotnet", "FarmHouse.Services.AuthenticationService.Api.dll"]

当我从父文件夹运行 docker build 时，我看到以下错误：

>docker build -t coreapp -f ./FarmHouse.Services.AuthenticationService/Dockerfile .

#14 1.643 /usr/share/dotnet/sdk/3.1.406/NuGet.targets(282,5): error MSB3202: The project file "/app/FarmHouse.Services.AuthenticationService/FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj" was not found. [/app/FarmHouseServices.sln]417050dbf1abf19fd7c8a7a0eb5d56150a                                                         0.0s
    #14 1.643 /usr/share/dotnet/sdk/3.1.406/NuGet.targets(282,5): error MSB3202: The project file "/app/FarmHouse.Services.AuthenticationService/FarmHouse.Services.AuthenticationService.Logic/FarmHouse.Services.AuthenticationService.Logic.csproj" was not found. [/app/FarmHouseServices.sln]                                                                                       0.0s
    #14 1.643 /usr/share/dotnet/sdk/3.1.406/NuGet.targets(282,5): error MSB3202: The project file "/app/FarmHouse.Services.Common/FarmHouse.Services.Common.Models/FarmHouse.Services.Common.Models.csproj" was not found. [/app/FarmHouseServices.sln]uthenticationService/FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj ./FarmHous  0.0s
    #14 1.643 /usr/share/dotnet/sdk/3.1.406/NuGet.targets(282,5): error MSB3202: The project file "/app/FarmHouse.Services.EmailService/FarmHouse.Services.EmailService.Api/FarmHouse.Services.EmailService.Api.csproj" was not found. [/app/FarmHouseServices.sln]                                                                                                                      1.0s
    #14 1.643 /usr/share/dotnet/sdk/3.1.406/NuGet.targets(282,5): error MSB3202: The project file "/app/FarmHouse.Services.EmailService/FarmHouse.Services.EmailService.Logic/FarmHouse.Services.EmailService.Logic.csproj" was not found. [/app/FarmHouseServices.sln]

请建议在这种情况下如何修改 Dockerfile 或架构。 谢谢。

Answer 1

您收到这些错误是因为您在.sln 文件级别运行dotnet 命令，因此dotnet 尝试恢复解决方案中尚未复制的所有.csproj 文件。

尝试将您的 dotnet restore 和 publish 命令替换为：

RUN dotnet restore ./FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj

RUN dotnet publish ./FarmHouse.Services.AuthenticationService.Api/FarmHouse.Services.AuthenticationService.Api.csproj -c Release -o out

您也可以复制所有 .csproj 文件并使用简单的 dotnet restore 恢复它们，但无论如何我都会使用 dotnet publish 命令的项目路径。