问题描述
我想从变量 Build.Repository.LocalPath 中获取数据并在我的Dockerfile中使用它，但它显示了我和错误.
I want to get the data from the variable Build.Repository.LocalPath and use it in my Dockerfile, but it shows me and error.
这是我的dockerfile:
This is my dockerfile:
FROM microsoft/aspnet:latest
COPY "/${Build.Repository.LocalPath}/NH.Services.WebApi/bin/Release/Publish/" /inetpub/wwwroot
我收到此错误:
Step 2/9 : COPY "/${Build.Repository.LocalPath}/NH.Services.WebApi/bin/Release/Publish/" /inetpub/wwwroot
failed to process "\"/${Build.Repository.LocalPath}/NH.Services.WebApi/bin/Release/Publish/\"": missing ':' in substitution
##[error]C:\Program Files\Docker\docker.exe failed with return code: 1
我尝试了很多方法，将这一行放在这行:
I have try a lot of ways, putting this line:
COPY "/${Build.Repository.LocalPath}/NH.Services.WebApi/bin/Release/Publish/" /inetpub/wwwroot
推荐答案
您可以在Dockerfile中添加一个参数:
You can add in the Dockerfile an argument:
ARG path
在Azure DevOps Docker任务中添加一个参数:
In the Azure DevOps Docker task add an argument:
-task: Docker@2
inputs:
command: build
arguments: --build-arg path=$(Build.Repository.LocalPath)
现在Dockerfile知道变量值，您可以使用它，例如:
Now the Dockerfile know the variable value and you can use it, for example:
FROM ubuntu:latest
ARG path
ECHO $path
结果:
Step 3/13 : RUN echo $path
---> Running in 213dsa3dacv
/home/vsts/work/1/s
但是，如果您尝试以这种方式复制应用，则:
But if you will try to copy the appliaction in this way:
FROM microsoft/aspnet:latest
ARG path
COPY $path/README.md /inetpub/wwwroot
您会收到一个错误:
这是因为Docker在一个临时文件夹中构建映像，并且他将源复制到该文件夹中，但是他没有复制代理文件夹(_work/1/s)，因此最好的方法是将相对路径放置在例如，存在Dockerfile(如果Dockerfile与README.md存在):
It's because the Docker build the image within a temporary folder and he copy the sources to there, but he doesn't copy the agent folders (_work/1/s) so the best way it's just put a relative path where the Dockerfile exist, for example (if the Dockerfile exist with the README.md):
FROM microsoft/aspnet:latest
COPY README.md /inetpub/wwwroot
这篇关于获取Build.Repository.LocalPath的数据并在我的DockerFile中使用它的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！