如何在Gitlab Runner上将卷挂载到Docker映像？ （gitlab-ci.yml）

Question

I've running a Docker image for browser testing setup on my gitlab runner. This is specified in a gitlab-ci.yml like so:

test:
  stage: test
  services:
    - name: mysql:5.7
      alias: mysql-test
  image: chilio/laravel-dusk-ci:stable
  script:
    - cp .env.ci .env
      ...

Now, when I run multiple tests, the first ones succeed and the rest fails. It seems this might be related to the shared memory, according to this issue: elgalu/docker-selenium#20 . I've already increased the shm_size setting on the gitlab runner itself, however I think I need to mount the docker image's shm folder to the runner's shm folder. Normally I would specify this in a docker-compose.yml or on the commandline like so:

docker run -v /dev/shm:/dev/shm

However I can't figure out how to do this in the gitlab-ci.yml . On the image key you can only specify a name and entrypoint ... as documented here

The question is: Can anyone tell me how mount the folder?

ps: for those interested, this is the error:

Facebook\WebDriver\Exception\NoSuchDriverException: invalid session id

Answer 1

You have to change your configuration of your gitlab runner to increase shm size

For instance: shm_size = 300000