Appending to PATH in a Windows Docker container

Question

I need to append to the PATH within a Windows Docker container, and I\'ve tried many permutations.

ENV PATH=%PATH%;C:\\\\Foo\\\\bin
ENV PATH=$PATH;C:\\\\Foo\         


        

Answer 1

You can set environment variables permanently in the container using a powershell script.

Create a powershell script in yout docker context (e.g. setpath.ps1 ) containing this:

[Environment]::SetEnvironmentVariable("Path", $env:Path + ";C:\Foo\bin", [EnvironmentVariableTarget]::Machine)

Add this script to your container dockerfile and RUN the script. Add something like this to your dockerfile:

ADD ./setpath.ps1 c:/MyScripts/setpath.ps1
RUN powershell -Command c:\MyScripts\setpath.ps1