Csharp 用于ASP.NET核心的最小扩展坞

我可以使用ASP.NET核心构建一个简单的REST API端点:

$ rm -rf PPP && mkdir PPP && cd PPP # <--- make sure dir is empty
$ dotnet new web 1>/dev/null
$ dotnet run
Building...
info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5270
# ... omitted other info ...

当我发送http GET请求时，一切正常:

$ curl http://localhost:5270/
Hello World! # <--- good ! (the default response generate in `dotnet new web`)                                                                                                   

当我试着按照this guide来"停靠"它时，它不起作用:

# Dockerfile 
FROM mcr.microsoft.com/dotnet/sdk:8.0
RUN mkdir Properties
COPY Program.cs Program.cs
COPY PPP.csproj PPP.csproj
COPY appsettings.json appsettings.json
COPY appsettings.Development.json appsettings.Development.json
COPY Properties/launchSettings.json Properties/launchSettings.json
EXPOSE 5270
CMD ["dotnet", "run"]

下面是我如何构建和运行docker映像

$ docker build --tag host --file Dockerfile .
$ docker run -p 8000:5270 -d -t --name scfrontcs host

下面是我得到的错误:

$ curl http://localhost:8000/                 
curl: (52) Empty reply from server

我做错了什么？

EDIT个

• 我在我的MacOS上运行8.0遇到了困难，所以我把图像降到了7.0
• 我现在可以从within号 docker 发送GET个请求
• 但有not个来自外部(从我本地的机器)

$ cat Dockerfile
FROM mcr.microsoft.com/dotnet/sdk:7.0
WORKDIR /App
COPY Program.cs Program.cs
COPY scfrontcs.csproj scfrontcs.csproj
COPY appsettings.json appsettings.json
EXPOSE 5000
# CMD ["dotnet", "run"] <--- commented, I will run it myself

$ docker build --tag host --file Dockerfile .
$ docker run -p 8000:5000 -d -t --name scfrontcs host
$ docker exec -it scfrontcs bash                     
root@fca567cab821:/App# dotnet run & # inside docker
[1] 97
root@fca567cab821:/App# info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5000
# ... omitted info ...
curl http://localhost:5000
Hello World # <--- works from within docker !