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c# - .net core 5 docker 以下示例未运行

问题描述

我按照我在网上找到的说明进行操作，这是我的 dockerfile：

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

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

# copy and publish app and libraries
COPY . .
RUN dotnet publish -c release -o /app --no-restore

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

我也有一个 .dockerignore 因为我得到 dir length exceeded 错误：

Dockerfile
[b|B]in
[O|o]bj

当我尝试运行它时，我收到此错误，指出未找到 aspnetcore：

It was not possible to find any compatible framework version
The framework 'Microsoft.AspNetCore.App', version '5.0.0' was not found.
  - No frameworks were found.

You can resolve the problem by installing the specified framework and/or SDK.

The specified framework can be found at:
  - https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=x64&rid=debian.10-x64

我在这里做错了吗？

标签： c#dockerasp.net-core.net-5

解决方案

除了@mtkachenko 提到的入口点不正确的答案外，您有 aspnet 应用程序，因此您需要 aspnet 库。而不是运行时图像mcr.microsoft.com/dotnet/runtime:5.0使用mcr.microsoft.com/dotnet/aspnet:5.0.

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