问题描述
我正在尝试在不使用 Visual Studio 的情况下生成 Docker 映像。我在项目文件夹中，我从 Windows 10 管理命令行执行 docker build . 我不知道如何进行这项工作。
[+] Building 1.3s (8/9)
=> [internal] load build deFinition from Dockerfile 0.0s
=> => transferring dockerfile: 753B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 34B 0.0s
=> [internal] load Metadata for mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim 0.0s
=> [base 1/2] FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim 0.0s
=> ERROR FROM docker.io/publish/app:latest 1.2s
=> => resolve docker.io/publish/app:latest 1.2s
=> CACHED [base 2/2] workdir /app 0.0s
=> CACHED [final 1/2] workdir /app 0.0s
=> [auth] publish/app:pull token for registry-1.docker.io 0.0s
------
> FROM docker.io/publish/app:latest:
------
Failed to load cache key: pull access denied,repository does not exist or may require authorization: server message: insufficient_scope: authorization Failed
这是我的 dockerfile：
#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim AS base
workdir /app
EXPOSE 80
EXPOSE 443
FROM mcr.microsoft.com/dotnet/core/sdk:3.1-buster AS build
workdir /src
copY ["src/App.Web/App.Web.csproj","src/App.Web/"]
RUN dotnet restore "App.Web.csproj"
copY . .
workdir "/src/App.Web"
RUN dotnet build App.Web.csproj -c Debug -o /app
FROM build as debug
RUN dotnet publish "App.Web.csproj" -c Debug -o /app
FROM base as final
workdir /app
copY --from=publish/app /app .
ENTRYPOINT ["dotnet","App.Web.dll"]
解决方法
您有称为基础、构建和调试的阶段。然后在最后阶段你有：
COPY --from=publish/app /app .
当 docker 找不到具有该名称 publish/app 的舞台时，它会尝试找到不存在的图像。我猜你想从构建阶段复制，例如
COPY --from=build /app .
你登录了吗？尝试使用 docker login，然后再次执行 docker build
正如我在此处看到的 aspnet in docker hub 您打算使用的存储库已重命名。改用以下内容
from mcr.microsoft.com/dotnet/aspnet:3.1-buster-slim
存储库已重命名，可以在此处找到类似的问题 similar issue