在Dockerfile复制命令上找不到项目文件 [英] Project files cannot be found on Dockerfile Copy command

问题描述

我有.net核心项目（ MySolution.Web.API ），它引用了几个.net标准2.0项目
（ MySolution .Infrastructure 和 MySolution.Domain ）

I have .net core project (MySolution.Web.API) which referencing couple of .net standard 2.0 projects (MySolution.Infrastructure and MySolution.Domain)

在我的硬盘驱动器上看起来像这样

on my hard drive solution looks like this

    .vs/
    bin/
    packages/
    MySolution.Infrastructure/
    MySolution.Domain/  
    MySolution.Web.API/
    .dockerignore
    docker-compose.yml
    ....
    MySolution.sln

在MySolution.Web.API内有Dockerfile

Inside MySolution.Web.API there is Dockerfile

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

FROM microsoft/aspnetcore-build:2.0 AS build
WORKDIR /src

COPY MySolution.Web.API.csproj Web.API/
COPY MySolution.Infrastructure.csproj MySolution.Infrastructure/
COPY MySolution.Domain.csproj MySolution.Domain/

RUN dotnet restore MySolution.Web.API.csproj
COPY . .
WORKDIR /src/MySolution.Web.API
RUN dotnet build MySolution.Web.API.csproj -c Release -o /app

FROM build AS publish
RUN dotnet publish MySolution.Web.API.csproj -c Release -o /app

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

何时我尝试使用

docker build -t mysolution.web.api .
Step 1/20 : FROM microsoft/aspnetcore:2.0 AS base
 ---> db030c19e94b
Step 2/20 : WORKDIR /app
 ---> Using cache
 ---> c46d1d16c23c
Step 3/20 : EXPOSE 80
 ---> Using cache
 ---> 615befacb30c
Step 4/20 : FROM microsoft/aspnetcore-build:2.0 AS build
 ---> 06a6525397c2
Step 5/20 : WORKDIR /src
 ---> Using cache
 ---> d8b8d0f73449
Step 6/20 : COPY MySolution.Web.API.csproj MySolution.Web.API/
 ---> Using cache
 ---> bcfb36743124
Step 7/20 : COPY MySolution.Infrastructure.csproj MySolution.Infrastructure/
COPY failed: stat /var/lib/docker/tmp/docker-builder805773291/MySolution.Infrastructure.csproj: no such file or directory   

由于Dockerfile位于MySolution.Web.API /文件夹中，因此我尝试更改复制命令的路径在Dockerfile内

Since Dockerfile is inside MySolution.Web.API/ folder I tried to change path on copy command inside Dockerfile to

COPY ../MySolution.Infrastructure.csproj ../MySolution.Infrastructure/

但我不允许这样做。

推荐答案

这里的问题是

MySolution.Infrastructure.csproj

在Docker映像的构建上下文之外。
这样运行docker build命令

is outside of the build context of the Docker image. Running docker build command like that

docker build -t mysolution.web.api .

告诉Docker守护进程，只有当前文件夹中的文件才参与Docker映像构建。您必须更改构建上下文路径。尝试使用

tells Docker deamon that only files from current folder takes part in Docker image building. You have to change your build context path. Try to use

docker build -t mysolution.web.api .. 

并根据新的构建上下文路径修改Dockerfile中的文件路径。

and modify files paths in the Dockerfile according to new build context path.

有关更多信息，请检查文档：
https：//docs.docker .com / engine / reference / commandline / build /＃build-with-path

For more information check documentation: https://docs.docker.com/engine/reference/commandline/build/#build-with-path

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