docker build net core 5.0中的centos 8错误消息net SDK未安装

Question

I Project MVCVue添加文件夹构建路径home/paul/Downloads/MVCVue/App/bin/De
#Dokerfile#

ROM mcr.microsoft.com/dotnet/aspnet:5.0-focal AS base
WORKDIR /app
EXPOSE 5000
ENV ASPNETCORE_URLS=http://+:5000
RUN adduser -u 5678 --disabled-password --gecos "" appuser && chown -R appuser /app
USER appuser
FROM mcr.microsoft.com/dotnet/sdk:5.0-focal AS build
WORKDIR /src
COPY ["MVCVue.csproj", "./"]
COPY . .
FROM base AS final
WORKDIR /app
ENTRYPOINT ["dotnet", "MVCVue.dll"]

我的docker图像
#docker图像#

Step 13/13 : ENTRYPOINT ["dotnet", "MVCVue.dll"]
---> Running in cc2865b2290a
Removing intermediate container cc2865b2290a
---> 2f79dc5fec19
Successfully built 2f79dc5fec19
Successfully tagged netcore:v
[root@localhost De]# docker images
REPOSITORY                        TAG         IMAGE ID       CREATED              SIZE
netcore                           v           2f79dc5fec19   About a minute ago   215MB
<none>                            <none>      83feaa33c847   About a minute ago   646MB
mcr.microsoft.com/dotnet/sdk      5.0-focal   939156dd4acc   12 days ago          646MB
mcr.microsoft.com/dotnet/aspnet   5.0-focal   063dc45e41e8   12 days ago          213MB

我有SDK 5.0我不知道错过了什么，但告诉我错误NET SDK没有安装

#错误消息#

[root@localhost De]# docker run netcore:v
Could not execute because the application was not found or a compatible .NET SDK is not installed.
Possible reasons for this include:
* You intended to execute a .NET program:
The application 'MVCVue.dll' does not exist.
* You intended to execute a .NET SDK command:
It was not possible to find any installed .NET SDKs.
Install a .NET SDK from:
https://aka.ms/dotnet-download

Answer 1

您没有在Dockerfile中构建应用程序，所以没有什么可执行的。

尝试将Dockerfile更改为

FROM mcr.microsoft.com/dotnet/aspnet:5.0-focal AS base
WORKDIR /app
EXPOSE 5000
ENV ASPNETCORE_URLS=http://+:5000
RUN adduser -u 5678 --disabled-password --gecos "" appuser && chown -R appuser /app
USER appuser
FROM mcr.microsoft.com/dotnet/sdk:5.0-focal AS build
WORKDIR /src
COPY ["MVCVue.csproj", "./"]
RUN dotnet restore
COPY . .
RUN dotnet publish -c Release -o out
FROM base AS final
WORKDIR /app
COPY --from=build /src/out .
ENTRYPOINT ["dotnet", "MVCVue.dll"]