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author | Teresa e Junior <teresaejunior@gmail.com> | 2017-12-21 09:38:17 +0300 |
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committer | Teresa e Junior <teresaejunior@gmail.com> | 2017-12-21 09:38:17 +0300 |
commit | b6e37978bcc595d5336d09c8e0bbb854fbb7cf14 (patch) | |
tree | 7c07fee1ba73700da470981a64160c2cd3cbd8ad /doc | |
parent | 5d8d72f18e9329978987fcb046467ceacd13c3ab (diff) |
Document mounting volumes with Docker-in-Docker
Diffstat (limited to 'doc')
-rw-r--r-- | doc/ci/docker/using_docker_build.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/doc/ci/docker/using_docker_build.md b/doc/ci/docker/using_docker_build.md index 0a2419b7ed2..22afcb9199d 100644 --- a/doc/ci/docker/using_docker_build.md +++ b/doc/ci/docker/using_docker_build.md @@ -164,6 +164,21 @@ not without its own challenges: - By default, `docker:dind` uses `--storage-driver vfs` which is the slowest form offered. To use a different driver, see [Using the overlayfs driver](#using-the-overlayfs-driver). +- Since the `docker:dind` container and the runner container don't share their + root filesystem, the job's working directory can be used as a mount point for + children containers. For example, if you have files you want to share with a + child container, you may create a subdirectory under `/builds/$CI_PROJECT_PATH` + and use it as your mount point (for a more thorough explanation, check [issue + #41227](https://gitlab.com/gitlab-org/gitlab-ce/issues/41227)): + + ```yaml + variables: + MOUNT_POINT: /builds/$CI_PROJECT_PATH/mnt + + script: + - mkdir -p "$MOUNT_POINT" + - docker run -v "$MOUNT_POINT:/mnt" my-docker-image + ``` An example project using this approach can be found here: https://gitlab.com/gitlab-examples/docker. |