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.

• Varun Sukheja: if possible can you tell me how should I defer it?
• User9123: It seems that you already do that with the sleep command. Try to increase the sleep value and also check the output of the serve command for errors.

Answer 2

I had a similar issue. After a google search, I figure out that the gatsby server isn't having enough time to start so I increased the sleep time. Later the pipeline output a different code error (23) Failed writing body here it seemed that something wrong with the script pipeline curl "http://localhost:9000" | grep -q "Gatsby". this answer explains why this error occur with such piped program, so I ended up like that,

test website:
 image: node
 stage: test
 script:
 - npm i
 - npm i -g gatsby-cli
 - gatsby serve &
 - sleep 10
 - curl "http://localhost:9000" | tac | tac | grep -q "Gatsby"

and my pipeline worked, I hope my answer will help you