Building node project on remote server from build server

I'm new to CI and deployment and I've created a CI file to try to copy a project to my remote server and run yarn.

This is the script I have:

image: node:latest

before_script:
  - 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y )'

  # Run ssh-agent (inside the build environment)
  - eval $(ssh-agent -s)

  # Add the SSH key stored in SSH_PRIVATE_KEY variable to the agent store
  - ssh-add <(echo "$SSH_PRIVATE_KEY")
  - mkdir -p ~/.ssh
  - echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config


test_job:
  script:
   - scp -r src package.json user@host:~/test
   - ssh -tt user@host
   - pwd
   - cd test
   - yarn

My project does get copied to my server and I'm able to SSH into the remote server as I see host@host:~# in the pipeline. But then the deployment hangs and I do not see the output of pwd. Does anyone know why this might be? Going onto the server and viewing the contents of the test dir confirms that the yarn command was reached.

On a separate note is this the best way of going about what i'm trying to achieve (copy my project to a remote server and run yarn to build the packages)? I know I could run yarn on the build server and copy this to my remote server but this would involve a lot more data transfer.

Any advise or help would be greatly appreciated, thanks.

via Maxxi