Use cache for node build

[Guillaume POITTEVIN]

Hello,

I use Bitbucket pipeline to perform test on my project.

Here is my .yml :

image: node:8.3
pipelines:
  default:
    - step:
        caches:
          - node
        script:
          - cd build
          - npm install
          - npm test

I have this error during the process :

Cache "node": Not found

So I try this :

image: node:8.3
pipelines:
  default:
    - step:
        caches:
          - node
        script:
          - cd build
          - npm install
          - npm test
definitions:
  caches:
    node: build/node_modules

But none seems to work.

How could I solve this ?