gitlab-runner

A derived version of gitlab-runner tailored for running as a Docker swarm service.

Based on the alpine tag, it basically adds an automatic registration if the config file does not exists. The registration will be performed non-interactively using environment variables to set various options.

Environment variables

To be defined

The following variables must be defined in order to have a working runner:

• CI_SERVER_URL: the url of the Gitlab server
• REGISTRATION_TOKEN: registration token from the Gitlab server above
• CI_SERVER_TOKEN: an alternative to REGISTRATION_TOKEN the value should be the one found in an existing config.toml from an already registered runner

Pre-defined environment variables

The following variables are already defined to sensible values but can be overridden.

• DOCKER_PRIVILEGE=true
• RUNNER_EXECUTOR=docker
• DOCKER_IMAGE=docker:git
• DOCKER_VOLUMES=DOCKER_VOLUMES

Volumes and Environment

DOCKER_VOLUME and RUNNER_ENV should allow to create an array of strings in config.toml. However as explained in issue #259 the runner is not able to split the variable into a TOML array. In order to work around this, the following workaround is implemented:

1. The base variable should contain the first entry for instance: DOCKER_VOLUMES=DOCKER_VOLUMES.
2. Additional entries should be placed in a variable suffixed by _EXTRA. The entries should be in TOML syntax that is between double quotes and separated by commas (,). For instance: RUNNER_ENV_EXTRA="A=B","C=D".

License

This code is distributed under the MIT license, see the LICENSE file.