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fingers10
Asked: 2023-12-04 22:50:17 +0800 CST

更新到 .NET 8 后无法从 alpine docker 容器访问 ASP.NET Core 应用程序

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我的 ASP.NET Core 7.0 应用程序在 AWS Elastic Container Service 中运行，使用使用以下 Docker 文件从 alpine 映像构建的容器。

ASP.NET Core 7.0 Docker 文件：

FROM mcr.microsoft.com/dotnet/aspnet:7.0-alpine AS base
WORKDIR /app
ENV DOTNET_RUNNING_IN_CONTAINER=true
RUN apk add --no-cache icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib  
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
EXPOSE 443

FROM mcr.microsoft.com/dotnet/sdk:7.0-alpine AS build
WORKDIR /src
COPY ["IDP/IDP.csproj", "IDP/"]
COPY ["Infrastructure/Infrastructure.csproj", "Infrastructure/"]
COPY ["Domain/Domain.csproj", "Domain/"]
COPY ["Shared/Shared.csproj", "Shared/"]
RUN dotnet restore "IDP/IDP.csproj"
COPY . .
WORKDIR "/src/IDP"
RUN dotnet build "IDP.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "IDP.csproj" -c Release -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ARG ENVIRONMENT
ENV ASPNETCORE_ENVIRONMENT $ENVIRONMENT
ENTRYPOINT ["dotnet", "IDP.dll"]

现在，更新到 .NET 8 后，我可以看到容器仍在运行，但无法从我的应用程序访问任何端点。

然后在谷歌搜索后，我发现了以下重大更改文档。

默认端口映射更改： https://learn.microsoft.com/en-us/dotnet/core/compatibility/containers/8.0/aspnet-port

所以我在 Docker 文件中添加了以下内容：

FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
WORKDIR /app
ENV DOTNET_RUNNING_IN_CONTAINER=true
RUN apk add --no-cache icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib  
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
ENV ASPNETCORE_HTTP_PORTS=80     #<---- Newly added
ENV ASPNETCORE_HTTPS_PORTS=443   #<---- Newly added
EXPOSE 80                        #<---- Newly added
EXPOSE 443

然后我开始收到以下错误：

System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date.

现在容器没有运行并开始抛出证书错误。

再次发现另一个与重大更改相关的证书文档，如下链接： https ://learn.microsoft.com/en-us/dotnet/core/compatibility/containers/8.0/krb5-libs-package

泊坞窗文件：

RUN apk add --no-cache icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib ca-certificates  #<---- Newly added ca-certificates

仍然面临同样的错误。

这是我的最终 ASP.NET Core 8 Docker 文件

FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
WORKDIR /app
ENV DOTNET_RUNNING_IN_CONTAINER=true
RUN apk add --no-cache icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib ca-certificates 
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
ENV ASPNETCORE_HTTP_PORTS=80
ENV ASPNETCORE_HTTPS_PORTS=443
EXPOSE 80
EXPOSE 443

FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
WORKDIR /src
COPY ["IDP/IDP.csproj", "IDP/"]
COPY ["Infrastructure/Infrastructure.csproj", "Infrastructure/"]
COPY ["Domain/Domain.csproj", "Domain/"]
COPY ["Shared/Shared.csproj", "Shared/"]
RUN dotnet restore "IDP/IDP.csproj"
COPY . .
WORKDIR "/src/IDP"
RUN dotnet build "IDP.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "IDP.csproj" -c Release -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ARG ENVIRONMENT
ENV ASPNETCORE_ENVIRONMENT $ENVIRONMENT
ENTRYPOINT ["dotnet", "IDP.dll"]

请问有人可以帮助我解决我所缺少的吗？

.net

1 个回答

  1. Best Answer

    在版本 8 之前，您的容器侦听端口 80。

    要让它恢复这样做，添加就足够了

    ENV ASPNETCORE_HTTP_PORTS=80

    到你的 Dockerfile。

    当您添加ASPNETCORE_HTTPS_PORTS时，您的应用程序想要侦听 HTTPS 流量。它以前没有这样做，即使你EXPOSE端口 443。EXPOSE 主要是文档和你的情况，它是不正确的。当您的应用程序开始侦听 HTTPS 流量时，它需要您尚未提供的证书。这就是它失败的原因。

    尝试将其作为您的 Dockerfile

    FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
WORKDIR /app
ENV DOTNET_RUNNING_IN_CONTAINER=true
RUN apk add --no-cache icu-libs krb5-libs libgcc libintl libssl1.1 libstdc++ zlib ca-certificates 
ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
ENV ASPNETCORE_HTTP_PORTS=80
EXPOSE 80

FROM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
WORKDIR /src
COPY ["IDP/IDP.csproj", "IDP/"]
COPY ["Infrastructure/Infrastructure.csproj", "Infrastructure/"]
COPY ["Domain/Domain.csproj", "Domain/"]
COPY ["Shared/Shared.csproj", "Shared/"]
RUN dotnet restore "IDP/IDP.csproj"
COPY . .
WORKDIR "/src/IDP"
RUN dotnet build "IDP.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "IDP.csproj" -c Release -o /app/publish /p:UseAppHost=false

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ARG ENVIRONMENT
ENV ASPNETCORE_ENVIRONMENT $ENVIRONMENT
ENTRYPOINT ["dotnet", "IDP.dll"]

    这应该会使您的应用程序表现得像以前一样。

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