With a simple gitlab-ci
setup I am trying to build a docker, and I want to push that docker into the registry for that project. But despite the available documentation I am not able to get it to work. The examples are not good enough, or out of date, or both. After following many examples [2] and various attempts I am now stuck at getting this pipeline error
...
$ docker info
errors pretty printing info
Client:
Debug Mode: false
Server:
ERROR: error during connect: Get https://gitlab.example.com:5050/v1.40/info: x509: certificate signed by unknown authority
The GitLab software is up-to-date (version 13.0.6)
Say the we have this very basic example
variables:
DOCKER_HOST: tcp://gitlab.example.com:5050
build:
image: docker:19.03.11
stage: build
tags:
- docker-in-docker
services:
- docker:19.03.11-dind
script:
- docker info
An I have a runner which I created as follows (see [1])
gitlab-runner register -n \
--url https://gitlab.example.com/ \
--registration-token m-secret \
--executor docker \
--description "My Privileged Docker Runner" \
--docker-image "docker:19.03.11" \
--docker-privileged \
--docker-volumes "/certs/client"
The CERT of my GitLab server is from Let’s Encrypt. Nothing fancy, just working out of the box, thanks to GitLab.
From a “real” command line the docker login
and docker push
commands work as expected. So, the built-in registry in GitLab is working, and the CERT is OK.
[1] Use Docker to build Docker images | GitLab
[2] https://gitlab.m2m4all.com/help/user/packages/container_registry/index