Did you have CI/CD? How do you understand it?

CI/CD (Continuous Integration / Continuous Delivery) is a practice of automating the processes of building, testing, and delivering software.

Continuous Integration (CI) means that developers regularly integrate their changes into a shared repository, after which build and tests are automatically run to quickly identify errors.

Continuous Delivery (CD) is the automation of releasing new versions of an application so that they are ready for release at any moment. In a more advanced version — Continuous Deployment — the release happens automatically after all checks pass.

An example of a simple pipeline in GitLab CI:

stages:
  - build
  - test
  - deploy

build_job:
  stage: build
  script:
    - npm install
    - npm run build

test_job:
  stage: test
  script:
    - npm test

deploy_job:
  stage: deploy
  script:
    - ./deploy.sh
  when: manual

Thus, CI/CD helps improve code quality, accelerate the release of new features, and reduce the risks of errors during releases.