Docker volumes not mounted when using docker:dind
Summary
Docker volumes not mounted when using docker:dind
Steps to reproduce
With the following .gitlab-ci.yml file, the Docker command should return test_file
, showing that the /mnt directory was mounted successfully. It returns nothing.
image: docker:latest
services:
- docker:dind
stages:
- test
docker:
stage: test
script:
- touch /mnt/test_file
- docker run -v /mnt:/mnt ubuntu ls /mnt
The Docker image gitlab/dind works, but it is based on jpetazzo/dind, which is obsolete and based on the very old Ubuntu Trusty (from 2014). So mounting the volumes work, but many other things that depend on newer technologies fail.
Example Project
In the following sample project, I'm using the shared CI runners, but other people from #gitlab on freenode tested it with private runners, and have the same problem.
https://gitlab.com/teresaejunior/my-awesome-project/blob/master/.gitlab-ci.yml
Relevant logs and/or screenshots
https://gitlab.com/teresaejunior/my-awesome-project/-/jobs/44977716
Output of checks
This bug happens on GitLab.com (but also on private runners, as shown by other users).