vs 2017 COPY失败：Docker File，CreateFile系统找不到指定的文件

Question

COPY失败：CreateFile \？\ C：\ ProgramData \ Docker \ tmp \ docker-builder056926419 \ WebApplication1.sln：系统找不到指定的文件。

样本文件：

FROM microsoft/aspnetcore:2.0 AS base
WORKDIR /app
EXPOSE 80

FROM microsoft/aspnetcore-build:2.0 AS builder
WORKDIR /src
COPY WebApplication1.sln ./
COPY WebApplication1/WebApplication1.csproj Web/
RUN dotnet restore
COPY . .
WORKDIR /src/Web
RUN dotnet build -c Release -o /app


FROM builder AS publish
RUN dotnet publish -c Release -o /app

FROM base AS production
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "WebApplication1.dll"]

Answer 1

在Visual Stundio 2019中，我发现了一个有趣的问题\情境。当您尝试创建由VS自动生成的dockerfile时，生成的Dockerfile放置在主项目中，而不是存在于.dockerignore的root（.sln）文件夹中。

我有我的项目的下一个文件夹结构：

<DIR>          .
<DIR>          ..
            82 .dockerignore
         6 305 .gitignore
<DIR>          MyProject.API
<DIR>          MyProject.API.Client
<DIR>          MyProject.Model
<DIR>          MyProject.Repository
<DIR>          MyProject.Repository.Settings
         6 567 MyProject.sln
         4 899 README.md
<DIR>          Tests.MyProject.Repository
<DIR>          Tests.Model
<DIR>          Tests.MongoContext.Infrastructure
<DIR>          Tests.MongoQuery
<DIR>          Tests.OdataFilters

主要项目是MyProject.API.csproj（网页API）在MyProject.API。

VS自动生成的dockerfile具有以下结构：

FROM microsoft/dotnet:2.2-aspnetcore-runtime AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

#VS generate copy command explicitly for dependencies of main project (model, repository, settings, etc.)
FROM microsoft/dotnet:2.2-sdk AS build
WORKDIR /src
COPY ["MyProject.API/MyProject.API.csproj", "MyProject.API/"]
COPY ["MyProject.Model/MyProject.Model.csproj", "MyProject.Model/"]
COPY ["MyProject.Repository/MyProject.Repository.csproj", "MyProject.Repository/"]
COPY ["MyProject.Repository.Settings/MyProject.Repository.Settings.csproj", "MyProject.Repository.Settings/"]
RUN dotnet restore "MyProject.API/MyProject.API.csproj"
COPY . .
WORKDIR "/src/MyProject.API"
RUN dotnet build "MyProject.API.csproj" -c Release -o /app

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

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

当我尝试根据Docker的指示构建映像时，我遇到了问题：

Linux容器类型：

Step 7/20 : COPY ["MyProject.API/MyProject.API.csproj", "MyProject.API/"]
COPY failed: stat /var/lib/docker/tmp/docker-builder799586484/MyProject.API/MyProject.API.csproj: no such file or directory

Windows容器类型：

Step 7/20 : COPY ["MyProject.API/MyProject.API.csproj", "MyProject.API/"]
COPY failed: CreateFile \\?\C:\ProgramData\Docker\tmp\docker-builder753862033\MyProject.API\MyProject.API.csproj: The system cannot find the path specified.

根据此答案，我将Dockerfile移至根文件夹（存在.sln和.dockerignore文件的位置），并且问题得到解决。

Answer 2

目录结构有问题。

1. 将 dockerfile 移至 bin/Release/PublishOutput（运行 VS 发布 > 文件系统后）
2. 将所有文件移动到站点文件夹中
3. 跑步docker build

https://forums.docker.com/t/copy-failed-trying-to-install-plain-asp-net-mvc-app-to-a-container/57217/3

我不确定如何让它在 VS 中自动工作。