Gitlab CI not caching

Question

I have the following gitlab ci yaml file:

image: steveedson/ci

stages:
  - build

cache:
  untracked: true
  key: "$CI_PROJECT_ID"
  paths:
    - node_modules/
    - _site/vendor/
    - .bundled/
    - .yarn

build:
  stage: build
  script:
    - ls -l
    - yarn config set cache-folder .yarn
    - yarn install
    - ...

When my successful builds finish, they show:

Creating cache 1970478...
Created cache

And when the next commit triggers a build, I get:

Checking cache for 1970478...
Successfully extracted cache

But the ls -l in my first step doesn't show the cached directories. I've tried caching the cache key but this doesn't help.

This is running on gitlab.com, not a private server.

Answer 1

So, my configuration is correct, and Gitlab does support caches between jobs, however they have not added this to shared runners on gitlab.com, yet.

The issue is here https://gitlab.com/gitlab-com/infrastructure/issues/919 and should be added soon.