升级Docker镜像至6.0-jammy-chiseled遇镜像找不到错误求助

问题原因 #

.NET 6的jammy-chiseled镜像并未在官方正式仓库（mcr.microsoft.com/dotnet/）发布，该镜像仅存在于nightly（每日构建）仓库下，直接引用正式仓库路径会触发镜像不存在的错误。

修改后的Dockerfile #

将所有镜像源替换为nightly仓库路径即可解决问题：

FROM mcr.microsoft.com/dotnet/nightly/aspnet:6.0-jammy-chiseled AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

FROM mcr.microsoft.com/dotnet/nightly/sdk:6.0-jammy-chiseled AS build
WORKDIR /src
COPY ["Weather2.csproj", "."]
RUN dotnet restore "./Weather2.csproj"
COPY . .
WORKDIR "/src/."
RUN dotnet build "Weather2.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "Weather2.csproj" -c Release -o /app/publish

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "Weather2.dll"]

验证说明 #

你手动拉取docker pull mcr.microsoft.com/dotnet/nightly/aspnet:6.0-jammy-chiseled成功，说明该镜像在nightly仓库确实存在，替换Dockerfile中的镜像前缀后，构建即可正常运行。

内容的提问来源于stack exchange，提问作者Steve