GitLab-CI Multi Runner php composer cache

Question

I'm using gitlab-ci-multi-runner with docker containers. Everything is going fine, but docker containers don't keep the composer cache so in every run composer downloads dependencies again and again, which takes a lot of time. Is there any way to configure gitlab-ci-runner docker container to keep the composer cache or mount a volume on each run where the composer cache is kept?

Answer 1

You could modify the composer cache path and write the stuff to a docker volume.

That storage is persistent and can be shared across containers.

Referencing:

• https://gitlab.com/gitlab-org/gitlab-runner/blob/master/docs/configuration/advanced-configuration.md#volumes-in-the-runnersdocker-section
• https://docs.docker.com/engine/admin/volumes/volumes/