Gitlab piepline + docker : (7) Failed to connect to localhost port 9000: Connection refuse

Question

I am new in writing pipelines, below is the job which I am trying to run

test website:
  image: node
  stage: test
  script:
    - npm i
    - npm i -g gatsby-cli
    - gatsby serve &
    - sleep 3
    - curl "http://localhost:9000" | grep -q "Gatsby"

But it failed at the very last step which below log

gatsby serve &
$ sleep 3
$ curl "http://localhost:9000" | grep -q "Gatsby"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (7) Failed to connect to localhost port 9000: Connection refused
ERROR: Job failed: exit code 1

Please help me to resolve this, also help me in understanding the mistake.

Answer 1

The error message means that nothing is running on localhost:9000. Check that your application is actually configured to run on port 9000 and if so, try to defer your curl request for a few seconds to allow the application to initialize.