I have been fighting this for a day now. Thanks for the clarification.
I am trying to develop an automated install of many perl CPAN modules that need networking activated to pass tests at installation. Whenever I used the Dockerfile to run cpanm it fails however when I connect into a container and run the commands manually it always worked…
Is it possible to have a build network that is the same as the container?
Otherwise I could build the environment I need in the container manually and then make an image out of that. Not my favourite approach but will work it work?