How to enable maven artifact caching for gitlab ci runner?

Question

We use gitlab ci with shared runners to do our continuous integration. For each build, the runner downloads tons of maven artifacts.

Is there a way to configure gitl

Answer 1

The accepted answer didn't do it for me.

As zlobster mentioned, the guys at GitLab have this amazing repository where you can find a proper example of the .gitlab-ci.yml file used for Maven projects.

Basically, what you need are these lines:

cache:
  paths:
    - .m2/repository

Keep in mind that if you decide to a add a local cache for a certain job, the global one added above will be replaced. More on this here.

Answer 2

You can add cache folder to gitlab-ci runner configuration and pass it to maven.

/etc/gitlab-runner/config.toml

[[runners]]
...
  [runners.docker]
  ...
   volumes = ["/cache", "/.m2"]
  ...

.gitlab-ci.yml

variables:
  MAVEN_OPTS: "-Dmaven.repo.local=/.m2"

build:
  script:
    - mvn package