Gitlab CI pipelines output

To be considered valid YAML, you must wrap the entire command in single quotes. If the command already uses single quotes, you should change them to double quotes (") if possible:

job:
  script:
    - 'curl --request POST --header "Content-Type: application/json" "https://gitlab/api/v4/projects"'`

This Stackoverflow got bit more info
https://stackoverflow.com/questions/3790454/how-do-i-break-a-string-in-yaml-over-multiple-lines/21699210#21699210

Starting in GitLab 16.7 and GitLab Runner 16.7, you can now enable a feature flag titled FF_SCRIPT_SECTIONS, which will add a collapsible output section to the CI job log for multi-line command script blocks. This feature flag changes the log output for CI jobs that execute within the Bash shell.

A pipeline with a multi-line command in the script block for the build-job

variables:
FF_PRINT_POD_EVENTS: "true"
FF_USE_POWERSHELL_PATH_RESOLVER: "true"
FF_SCRIPT_SECTIONS: "true"

this will be helpful when you have multi line script and want to see the complete output.