How to build Docker Images with Dockerfile behind HTTP_PROXY by Jenkins?

Question

Building Docker images works in a desktop without a problem. Installing Node.js NPM dependencies work as usual. However, when using a continuous integration server such as J

Answer 1

We are doing ...

ENV http_proxy http://9.9.9.9:9999
ENV https_proxy http://9.9.9.9:9999

and at end of dockerfile ...

ENV http_proxy ""
ENV https_proxy ""

This, for now (until docker introduces build env vars), allows the proxy vars to be used for build without publicly exposing them