无法绑定到IPv6环回接口上的http://localhost:5000：'无法分配请求的地址'

Question

我正在使用asp。net core 3.1 docker支持的项目模板（VS2019）用于开发web API。没有编译错误。

运行项目时，在VS2019的输出窗口中，我看到以下消息：

Unable to bind to http://localhost:5000 on the IPv6 loopback interface: 'Cannot assign requested address'.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/3.1.0/System.Collections.NonGeneric.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/3.1.0/System.Security.Cryptography.OpenSsl.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/3.1.0/System.Security.Cryptography.Encoding.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/share/dotnet/shared/Microsoft.NETCore.App/3.1.0/System.Runtime.Numerics.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Microsoft.AspNetCore.Server.Kestrel: Warning: Unable to bind to https://localhost:5001 on the IPv6 loopback interface: 'Cannot assign requested address'.
[40m[1m[33mwarn[39m[22m[49m: Microsoft.AspNetCore.Server.Kestrel[0]
      Unable to bind to https://localhost:5001 on the IPv6 loopback interface: 'Cannot assign requested address'.
[40m[32minfo[39m[22m[49m: Microsoft.Hosting.Lifetime[0]
      Now listening on: http://localhost:5000
Microsoft.Hosting.Lifetime: Information: Now listening on: http://localhost:5000
[40m[32minfo[39m[22m[49m: Microsoft.Hosting.Lifetime[0]
      Now listening on: https://localhost:5001
Microsoft.Hosting.Lifetime: Information: Now listening on: https://localhost:5001
Microsoft.Hosting.Lifetime: Information: Application started. Press Ctrl+C to shut down.
[40m[32minfo[39m[22m[49m: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
[40m[32minfo[39m[22m[49m: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Development
Microsoft.Hosting.Lifetime: Information: Hosting environment: Development
Microsoft.Hosting.Lifetime: Information: Content root path: /src/QueryStack/Author.Query.New.API
[40m[32minfo[39m[22m[49m: Microsoft.Hosting.Lifetime[0]
      Content root path: /src/QueryStack/Author.Query.New.API

这是我的Docker.develop文件：

FROM mcr.microsoft.com/dotnet/core/sdk:3.1
ARG BUILD_CONFIGURATION=Debug
ENV ASPNETCORE_ENVIRONMENT=Development
ENV DOTNET_USE_POLLING_FILE_WATCHER=true    
EXPOSE 80

WORKDIR /src
COPY ["QueryStack/Author.Query.New.API/Author.Query.New.API.csproj", "QueryStack/Author.Query.New.API/"]
COPY ["QueryStack/Author.Query.Persistence/Author.Query.Persistence.csproj", "QueryStack/Author.Query.Persistence/"]
COPY ["Common/Author.Core.Framework/Author.Core.Framework.csproj", "Common/Author.Core.Framework/"]
COPY ["Common/Author.Core.Services.Rediscache/Author.Core.Services.Rediscache.csproj", "Common/Author.Core.Services.Rediscache/"]
COPY ["QueryStack/Author.Query.Domain/Author.Query.Domain.csproj", "QueryStack/Author.Query.Domain/"]
COPY ["Common/Author.Core.Services.Persistence.CosmosDB/Author.Core.Services.Persistence.CosmosDB.csproj", "Common/Author.Core.Services.Persistence.CosmosDB/"]

RUN dotnet restore "QueryStack/Author.Query.New.API/Author.Query.New.API.csproj"
COPY . .
WORKDIR "/src/QueryStack/Author.Query.New.API"
RUN dotnet build --no-restore "Author.Query.New.API.csproj" -c $BUILD_CONFIGURATION

RUN echo "exec dotnet run --no-build --no-launch-profile -c $BUILD_CONFIGURATION --" > /entrypoint.sh

ENTRYPOINT ["/bin/bash", "/entrypoint.sh"]

有人能在这里帮助我提供他们的指导来解决这个问题吗

Answer 1

要解决此问题，请在Dockerfile顶部的其他ENV声明下面添加代码ENV ASPNETCORE_url=http://:80。开发文件

Dockerfile。在以下情况下发展：

FROM mcr.microsoft.com/dotnet/core/sdk:3.1
ARG BUILD_CONFIGURATION=Debug
ENV ASPNETCORE_ENVIRONMENT=Development
ENV DOTNET_USE_POLLING_FILE_WATCHER=true  
ENV ASPNETCORE_URLS=http://+:80  
EXPOSE 80