是否可以在同一個 ASP.NET 運行時容器中安裝不同的 ASP.NET Core 框架？

Question

我有以下Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal

COPY ./appsettings.json /icon/Server-Files/

WORKDIR /icon

COPY ./* /icon/Server-Files/
CMD [ "dotnet", "Server-Files/Server.dll" ]

我不必構建項目，因為我只編譯了.dll文件。

映像已構建並且能夠運行。 但是，我有一個客戶端試圖在服務器中執行一些任務，並且我不斷收到以下錯誤：

| The specified framework can be found at:
icon42test        | It was not possible to find any compatible framework version
icon42test        | The framework 'Microsoft.AspNetCore.App', version '5.0.0' (x64) was not found.
icon42test        |   - The following frameworks were found:
icon42test        |       6.0.6 at [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
icon42test        | 
icon42test        | You can resolve the problem by installing the specified framework and/or SDK.

有沒有辦法將5.0.0框架安裝到容器中？ 我無法理解 Docker Hub 上可用的不同dotnet映像之間的區別，例如aspnet 、 runtime-deps 、 runtime等。

因為我沒有源代碼，只有編譯的.dll文件，所以我無法理解我在aspnet運行時容器中可能需要哪些其他框架。

Answer 1

我可能已經找到了解決方案：

事實證明，大多數dotnet信息都存儲在 SDK 各自容器內的/usr/share/dotnet目錄中

Dockerfile 語法的COPY可用於使用以下命令將相關文件從容器映像復制到我當前的容器：

FROM mcr.microsoft.com/dotnet/aspnet:6.0-focal

## Add the relevant SDKs to this current runtime base image

COPY --from=mcr.microsoft.com/dotnet/sdk:2.1 /usr/share/dotnet /usr/share/dotnet/
COPY --from=mcr.microsoft.com/dotnet/sdk:5.0 /usr/share/dotnet /usr/share/dotnet/

# List out the available runtimes / SDKs
CMD ["dotnet", "--list-runtimes", "dotnet", "--list-sdks"]

結果輸出如下：

Microsoft.AspNetCore.All 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.6 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

現在您在容器中擁有了必要的運行時/SDK。