how to authenticate docker build when using private gitlab repo

Question

When running docker build on my Dockerfile, I pull the most up to date code from a private gitlab repo using a FROM gitlab statment. I am getting a access forbidden error as I have not given my credentials. How do you give your credentials so that I can pull from this private repo?

DannyB · Accepted Answer · 2019-02-05 16:58:55Z

1

(Assuming you are talking about Gitlab Container Registry)

To be able to pull docker images from private registries, you need to first run this at the command line:

$ docker login -u $DOCKER_USER -p $DOCKER_PASS

If you are running this in a CI environment, you should set these as secret environment variables.

With Gitlab, I believe it is something along these lines:

$ docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN registry.example.com

See the above linked page (search for "login") to see more examples and instructions.

answered Feb 5, 2019 at 16:58

DannyB

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