Environment variables for build not visible in Dockerfile

Question

I've set an environment variable (NPM_TOKEN) for my repo in Docker Cloud to use when building my Dockerfile. However, the variable is always empty...

Tried both of these in Dockerfile:

RUN echo ${NPM_TOKEN}

and:

ARG NPM_TOKEN
RUN echo ${NPM_TOKEN}

Am I wrong in assuming that Docker Clouds environment variables for build does the same thing as --build-arg?

No... Ended up with the crappy solution of checking in .npmrc into my github repo. — Anders Bornholm, Apr 05 '17 at 18:48

score 0 · Answer 1 · answered Jan 03 '18 at 08:31

0

It took me along time, but you can use build hooks to set variables for automated builds!

answered Jan 03 '18 at 08:31

Daniel Vogel

1 Answers1