Dockerfile失败，因为我无法复制它所依赖的类库答案

【问题标题】：Dockerfile fails because I cannot copy the class library it depends onDockerfile失败，因为我无法复制它所依赖的类库
【发布时间】：2023-02-12 20:38:09
【问题描述】：

我正在尝试从 Dockerfile 构建图像。问题是它无法找到消息类库，这意味着我必须执行类似 COPY ["src/MarketData.Subscriber/MarketData.Subscriber.csproj", "MarketData.Subscriber/"] COPY ["src/MarketData.Messages/MarketData.Messages.csproj", "MarketData.Messages/"] 的操作，但是当我在 WORKDIR 下添加这些时，COPY 失败。我该如何解决？

文件夹结构

 .
 +---src
 |   +---MarketData.Api
 |   +---MarketData.Messages
 |   +---MarketData.Subscriber
 |       +---Dockerfile
 +---MarketData.sln

文件

# Stage 1 - Build
FROM mcr.microsoft.com/dotnet/sdk:7.0 AS builder

WORKDIR /app/src

# Restore
COPY *.csproj .
RUN dotnet restore -r linux-x64

# Build
COPY . .
RUN dotnet publish -c Release -o /app/publish -r linux-x64 --no-self-contained --no-restore

# Stage 2 - Publish
FROM mcr.microsoft.com/dotnet/aspnet:7.0
WORKDIR /app

RUN addgroup --system --gid 101 app \
    && adduser --system --ingroup app --uid 101 app


COPY --from=builder --chown=app:app /app/publish .

USER app
ENTRYPOINT ["./MarketData.Subscriber"]

错误

[+] Building 4.0s (14/15)
 => [internal] load build definition from Dockerfile                                                                                                                                                        0.0s
 => => transferring dockerfile: 589B                                                                                                                                                                        0.0s
 => [internal] load .dockerignore                                                                                                                                                                           0.0s
 => => transferring context: 35B                                                                                                                                                                            0.0s
 => [internal] load metadata for mcr.microsoft.com/dotnet/sdk:7.0                                                                                                                                           0.4s
 => [internal] load metadata for mcr.microsoft.com/dotnet/aspnet:7.0                                                                                                                                        0.0s
 => [stage-1 1/4] FROM mcr.microsoft.com/dotnet/aspnet:7.0                                                                                                                                                  0.0s
 => [builder 1/6] FROM mcr.microsoft.com/dotnet/sdk:7.0@sha256:66a16cd71b82a2df577e52dfd01d8039ed4c20e3f17fca31b2fb3cf5929eaa7f                                                                             0.0s
 => [internal] load build context                                                                                                                                                                           0.0s
 => => transferring context: 650B                                                                                                                                                                           0.0s
 => CACHED [stage-1 2/4] WORKDIR /app                                                                                                                                                                       0.0s
 => CACHED [stage-1 3/4] RUN addgroup --system --gid 101 app     && adduser --system --ingroup app --uid 101 app                                                                                            0.0s
 => CACHED [builder 2/6] WORKDIR /app/src                                                                                                                                                                   0.0s
 => CACHED [builder 3/6] COPY *.csproj .                                                                                                                                                                    0.0s
 => CACHED [builder 4/6] RUN dotnet restore -r linux-x64                                                                                                                                                    0.0s
 => CACHED [builder 5/6] COPY . .                                                                                                                                                                           0.0s
 => ERROR [builder 6/6] RUN dotnet publish -c Release -o /app/publish -r linux-x64 --no-self-contained --no-restore                                                                                         3.5s
------
 > [builder 6/6] RUN dotnet publish -c Release -o /app/publish -r linux-x64 --no-self-contained --no-restore:
#14 0.567 MSBuild version 17.4.0-preview-22368-02+c8492483a for .NET
#14 1.270 /usr/share/dotnet/sdk/7.0.100-preview.7.22377.5/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(219,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [/app/src/MarketData.Subscriber.csproj]
#14 1.532 /usr/share/dotnet/sdk/7.0.100-preview.7.22377.5/Microsoft.Common.CurrentVersion.targets(2082,5): warning : The referenced project '../MarketData.Messages/MarketData.Messages.csproj' does not exist. [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/Actors/FtxSubscriptionGrain.cs(2,7): error CS0246: The type or namespace name 'Google' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/Actors/FtxSubscriptionGrain.cs(3,18): error CS0234: The type or namespace name 'Messages' does not exist in the namespace 'MarketData' (are you missing an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/Actors/FtxSubscriptionGrain.cs(5,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/Actors/FtxSubscriptionGrain.cs(6,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/ActorSystemConfiguration.cs(1,18): error CS0234: The type or namespace name 'Messages' does not exist in the namespace 'MarketData' (are you missing an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/ActorSystemConfiguration.cs(3,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.416 /app/src/ActorSystemConfiguration.cs(4,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemConfiguration.cs(5,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemConfiguration.cs(6,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemConfiguration.cs(7,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemConfiguration.cs(8,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemConfiguration.cs(9,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemHostedService.cs(1,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemHostedService.cs(2,7): error CS0246: The type or namespace name 'Proto' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(10,39): error CS0246: The type or namespace name 'FtxSubscriptionBase' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(12,22): error CS0246: The type or namespace name 'ClusterIdentity' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(18,9): error CS0246: The type or namespace name 'IContext' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(19,9): error CS0246: The type or namespace name 'ClusterIdentity' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemHostedService.cs(8,22): error CS0246: The type or namespace name 'ActorSystem' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/ActorSystemHostedService.cs(11,37): error CS0246: The type or namespace name 'ActorSystem' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(36,36): error CS0246: The type or namespace name 'SubscriptionRequest' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(51,38): error CS0246: The type or namespace name 'SubscriptionRequest' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
#14 3.417 /app/src/Actors/FtxSubscriptionGrain.cs(57,26): error CS0246: The type or namespace name 'SubscriptionStatus' could not be found (are you missing a using directive or an assembly reference?) [/app/src/MarketData.Subscriber.csproj]
------
executor failed running [/bin/sh -c dotnet publish -c Release -o /app/publish -r linux-x64 --no-self-contained --no-restore]: exit code: 1

【问题讨论】：

标签： c# .net dockerfile asp.net-core-webapi

【解决方案1】：

将您的 dockerfile 保持在解决方案级别。那么只有它才能找到 src 文件夹。

你的文件夹结构应该是这样的。

.
 +---src
 |   +---MarketData.Api
 |   +---MarketData.Messages
 |   +---MarketData.Subscriber
 +---MarketData.sln
 +---Dockerfile

并将相应的复制项目文件命令添加到 dockerfile。

希望能帮助到你。

【讨论】：

感谢你的回答！我见过几个微服务项目，包括来自 Microsoft github.com/dotnet-architecture/eShopOnContainers 的项目，它们确实在 src/ProjectName 文件夹中有它们的 Dockerfile。他们是如何做到的？
我猜他们正在使用 docker-compose 构建图像，在这种情况下，构建上下文设置在更高级别。你也可以试试看。如果你的目标是最终使用 docker-compose。
`=> 错误 [builder 4/6] RUN dotnet restore -r linux-x64 0.7s ------ > [builder 4/6] RUN dotnet restore -r linux-x64: #12 0.622 MSBUILD: 错误 MSB1003:指定项目或解决方案文件。当前工作目录不包含项目或解决方案文件。 ------ 执行程序运行失败 [/bin/sh -c dotnet restore -r linux-x64]：退出代码：1`
我假设我需要在将 Dockerfile 移动到 .sln 附近时构建解决方案？
您需要在还原步骤中指定主项目，它将在内部还原所有其他依赖项目。

【解决方案2】：

感谢 Cisien，问题已解决。这是由于我如何运行构建。

它应该从 root 和 docker build . -f src/Dockerfile 运行。这 '。'表示构建上下文，或者换句话说，表示可用于 docker 构建过程的父目录。

C:UsersuserDesktopMarketData>docker build -t marketdata:1.0 -f ./src/MarketData.Subscriber/Dockerfile 。

希望它能帮助别人。

文件

# Stage 1 - Build
FROM mcr.microsoft.com/dotnet/sdk:7.0 AS builder

WORKDIR /app/src

# Restore
COPY src/MarketData.Messages/MarketData.Messages.csproj MarketData.Messages/
COPY *.csproj .
RUN dotnet restore

# Build
COPY . .
RUN dotnet publish -c Release -o /app/publish --no-self-contained --no-restore

# Stage 2 - Publish
FROM mcr.microsoft.com/dotnet/aspnet:7.0
WORKDIR /app

RUN addgroup --system --gid 101 app 
    && adduser --system --ingroup app --uid 101 app

COPY --from=builder --chown=app:app /app/publish .

USER app
ENTRYPOINT ["./MarketData.Subscriber"]

【讨论】：

【解决方案3】：

在visual studio中，你可以将docker文件移动到一个后台文件夹中。例如，folder1/folder2/dockerfile 移动到 folder1/dockerfile 并构建图像。

Docker build -t imagename .

Docker run -p 7778:80 imagename

这个对我有用。

【讨论】：